diff --git a/lib/deferred-callback-queue.js b/lib/deferred-callback-queue.js
deleted file mode 100644
index 8dc5909edd..0000000000
--- a/lib/deferred-callback-queue.js
+++ /dev/null
@@ -1,79 +0,0 @@
-import {remote} from 'electron';
-import {CompositeDisposable, Disposable} from 'event-kit';
-import {autobind} from 'core-decorators';
-
-export default class DeferredCallbackQueue {
-  constructor(wait, callback, options = {}) {
-    this.wait = wait;
-    const currentWindow = remote.getCurrentWindow();
-
-    const onDidFocus = options.onDidFocus || function(cb) {
-      currentWindow.on('focus', cb);
-      return new Disposable(() => {
-        currentWindow.removeListener('focus', cb);
-      });
-    };
-    const onDidBlur = options.onDidBlur || function(cb) {
-      if (atom.inSpecMode()) {
-        return new Disposable();
-      }
-      currentWindow.on('blur', cb);
-      return new Disposable(() => {
-        currentWindow.removeListener('blur', cb);
-      });
-    };
-
-    this.callback = callback;
-    this.subscriptions = new CompositeDisposable();
-    this.items = new Set();
-
-    this.paused = !currentWindow.isFocused() && !atom.inSpecMode();
-    this.subscriptions.add(onDidFocus(this.resume));
-    this.subscriptions.add(onDidBlur(this.pause));
-  }
-
-  @autobind
-  pause() {
-    if (this.paused) { return; }
-    this.paused = true;
-  }
-
-  @autobind
-  resume() {
-    if (!this.paused) { return; }
-    this.paused = false;
-    if (this.timer) {
-      clearTimeout(this.timer);
-    }
-    this.flush();
-  }
-
-  resetTimer() {
-    if (this.timer) {
-      clearTimeout(this.timer);
-    }
-    this.timer = setTimeout(this.flush, this.wait);
-  }
-
-  @autobind
-  flush() {
-    delete this.timer;
-    if (this.items.size) {
-      this.callback([...this.items]);
-      this.items.clear();
-    }
-  }
-
-  push(...items) {
-    if (this.paused) {
-      items.forEach(item => this.items.add(item));
-      this.resetTimer();
-    } else {
-      this.callback(items);
-    }
-  }
-
-  destroy() {
-    this.subscriptions.dispose();
-  }
-}
diff --git a/lib/git-shell-out-strategy.js b/lib/git-shell-out-strategy.js
index 6153112807..66f515b7f8 100644
--- a/lib/git-shell-out-strategy.js
+++ b/lib/git-shell-out-strategy.js
@@ -119,6 +119,7 @@ export default class GitShellOutStrategy {
       const env = {
         ...process.env,
         GIT_TERMINAL_PROMPT: '0',
+        GIT_OPTIONAL_LOCKS: '0',
         PATH: pathParts.join(path.delimiter),
       };
 
diff --git a/lib/models/workdir-context.js b/lib/models/workdir-context.js
index 150370e1ce..3ee3934cba 100644
--- a/lib/models/workdir-context.js
+++ b/lib/models/workdir-context.js
@@ -1,7 +1,6 @@
-import {Emitter, CompositeDisposable, Disposable} from 'event-kit';
+import {Emitter, CompositeDisposable} from 'event-kit';
 import {autobind} from 'core-decorators';
 
-import DeferredCallbackQueue from '../deferred-callback-queue';
 import Repository from './repository';
 import ResolutionProgress from './conflicts/resolution-progress';
 import FileSystemChangeObserver from './file-system-change-observer';
@@ -41,9 +40,6 @@ export default class WorkdirContext {
       ? new WorkspaceChangeObserver(theWindow, workspace, this.repository)
       : new FileSystemChangeObserver(this.repository);
     this.resolutionProgress = new ResolutionProgress();
-    this.deferredCallbackQueue = new DeferredCallbackQueue(3000, collection => {
-      this.repository.observeFilesystemChange(collection);
-    });
 
     if (promptCallback) {
       this.repository.setPromptCallback(promptCallback);
@@ -53,10 +49,9 @@ export default class WorkdirContext {
     this.subs.add(this.repository.onDidChangeState(this.repositoryChangedState));
     this.subs.add(this.observer.onDidChange(events => {
       const paths = events.map(e => e.special || e.path);
-      this.deferredCallbackQueue.push(...paths);
+      this.repository.observeFilesystemChange(paths);
     }));
     this.subs.add(this.observer.onDidChangeWorkdirOrHead(() => this.emitter.emit('did-change-workdir-or-head')));
-    this.subs.add(new Disposable(() => this.deferredCallbackQueue.destroy()));
 
     // If a pre-loaded Repository was provided, broadcast an initial state change event.
     this.repositoryChangedState({from: null, to: this.repository.state});
diff --git a/package-lock.json b/package-lock.json
index b7dbb25eb8..4cba5fcc24 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "github",
-  "version": "0.6.3",
+  "version": "0.7.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -9,7 +9,7 @@
       "resolved": "https://registry.npmjs.org/@binarymuse/relay-compiler/-/relay-compiler-1.2.0.tgz",
       "integrity": "sha1-wMsEXcaKW1o29yCmZ6FEGNK/mPw=",
       "requires": {
-        "babel-generator": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.25.0.tgz",
+        "babel-generator": "6.25.0",
         "babel-polyfill": "6.23.0",
         "babel-runtime": "6.25.0",
         "babel-traverse": "6.25.0",
@@ -31,6 +31,28 @@
           "resolved": "https://registry.npmjs.org/asap/-/asap-2.0.6.tgz",
           "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY="
         },
+        "babel-generator": {
+          "version": "6.25.0",
+          "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.25.0.tgz",
+          "integrity": "sha1-M6GvcNXyiQrrRlpKd5PB32qeqfw=",
+          "requires": {
+            "babel-messages": "https://registry.npmjs.org/babel-messages/-/babel-messages-6.23.0.tgz",
+            "babel-runtime": "6.25.0",
+            "babel-types": "6.25.0",
+            "detect-indent": "https://registry.npmjs.org/detect-indent/-/detect-indent-4.0.0.tgz",
+            "jsesc": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
+            "lodash": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+            "source-map": "0.5.7",
+            "trim-right": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz"
+          },
+          "dependencies": {
+            "source-map": {
+              "version": "0.5.7",
+              "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+              "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
+            }
+          }
+        },
         "babel-runtime": {
           "version": "6.25.0",
           "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.25.0.tgz",
@@ -174,7 +196,7 @@
       "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
       "dev": true,
       "requires": {
-        "co": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
+        "co": "4.6.0",
         "json-stable-stringify": "https://registry.npmjs.org/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz"
       }
     },
@@ -248,7 +270,8 @@
       "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY="
     },
     "asn1": {
-      "version": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
       "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y="
     },
     "assert-plus": {
@@ -276,7 +299,8 @@
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0="
     },
     "asynckit": {
-      "version": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
     },
     "atob": {
@@ -337,7 +361,7 @@
       "integrity": "sha1-fdQrBGPHQunVKW3rPsZ6kyLa1yk=",
       "requires": {
         "babel-code-frame": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.22.0.tgz",
-        "babel-generator": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.25.0.tgz",
+        "babel-generator": "6.26.0",
         "babel-helpers": "https://registry.npmjs.org/babel-helpers/-/babel-helpers-6.24.1.tgz",
         "babel-messages": "https://registry.npmjs.org/babel-messages/-/babel-messages-6.23.0.tgz",
         "babel-register": "https://registry.npmjs.org/babel-register/-/babel-register-6.24.1.tgz",
@@ -369,29 +393,49 @@
       }
     },
     "babel-generator": {
-      "version": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.25.0.tgz",
-      "integrity": "sha1-M6GvcNXyiQrrRlpKd5PB32qeqfw=",
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.26.0.tgz",
+      "integrity": "sha1-rBriAHC3n248odMmlhMFN3TyDcU=",
       "requires": {
         "babel-messages": "https://registry.npmjs.org/babel-messages/-/babel-messages-6.23.0.tgz",
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0",
+        "babel-runtime": "6.26.0",
+        "babel-types": "6.26.0",
         "detect-indent": "https://registry.npmjs.org/detect-indent/-/detect-indent-4.0.0.tgz",
         "jsesc": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
         "lodash": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-        "source-map": "https://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
+        "source-map": "0.5.7",
         "trim-right": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz"
       },
       "dependencies": {
+        "babel-runtime": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
+          "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+          "requires": {
+            "core-js": "2.5.0",
+            "regenerator-runtime": "0.11.0"
+          }
+        },
         "babel-types": {
-          "version": "6.25.0",
-          "resolved": "https://registry.npmjs.org/babel-types/-/babel-types-6.25.0.tgz",
-          "integrity": "sha1-cK+ySNVmDl0Y+BHZHIMDtUE0oY4=",
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-types/-/babel-types-6.26.0.tgz",
+          "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
           "requires": {
-            "babel-runtime": "6.25.0",
+            "babel-runtime": "6.26.0",
             "esutils": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
             "lodash": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
             "to-fast-properties": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-1.0.3.tgz"
           }
+        },
+        "regenerator-runtime": {
+          "version": "0.11.0",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.0.tgz",
+          "integrity": "sha512-/aA0kLeRb5N9K0d4fw7ooEbI+xDe+DKD499EQqygGqeS8N3xto15p09uY2xj7ixP81sNPXvRLnAQIqdVStgb1A=="
+        },
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
         }
       }
     },
@@ -472,6 +516,31 @@
       "version": "https://registry.npmjs.org/babel-plugin-chai-assert-async/-/babel-plugin-chai-assert-async-0.1.0.tgz",
       "integrity": "sha1-pJMXc79WPcKt3mzXm28ZRknr/SU="
     },
+    "babel-plugin-relay": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/babel-plugin-relay/-/babel-plugin-relay-1.4.1.tgz",
+      "integrity": "sha512-ER7HmXOz60zyLnh4yGvfP2UhsHyOPIIGmu+rE27IKzVdXhua+RXeS6462WuRod86u4EASJsfmbHRlqWy2GegwA==",
+      "requires": {
+        "babel-runtime": "6.25.0",
+        "babel-types": "6.25.0",
+        "graphql": "0.11.7"
+      },
+      "dependencies": {
+        "graphql": {
+          "version": "0.11.7",
+          "resolved": "https://registry.npmjs.org/graphql/-/graphql-0.11.7.tgz",
+          "integrity": "sha512-x7uDjyz8Jx+QPbpCFCMQ8lltnQa4p4vSYHx6ADe8rVYRTdsyhCJbvSty5DAsLVmU6cGakl+r8HQYolKHxk/tiw==",
+          "requires": {
+            "iterall": "1.1.3"
+          }
+        },
+        "iterall": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/iterall/-/iterall-1.1.3.tgz",
+          "integrity": "sha512-Cu/kb+4HiNSejAPhSaN1VukdNTTi/r4/e+yykqjlG/IW+1gZH5b4+Bq3whDX4tvbYugta3r8KTMUiqT3fIGxuQ=="
+        }
+      }
+    },
     "babel-plugin-syntax-async-functions": {
       "version": "6.13.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz",
@@ -493,6 +562,11 @@
       "version": "https://registry.npmjs.org/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz",
       "integrity": "sha1-CvMqmm4Tyno/1QaeYtew9Y0NiUY="
     },
+    "babel-plugin-syntax-object-rest-spread": {
+      "version": "6.13.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz",
+      "integrity": "sha1-/WU28rzhODb/o6VFjEkDpZe7O/U="
+    },
     "babel-plugin-transform-async-to-generator": {
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-async-to-generator/-/babel-plugin-transform-async-to-generator-6.24.1.tgz",
@@ -529,6 +603,87 @@
         "babel-runtime": "6.25.0"
       }
     },
+    "babel-plugin-transform-es2015-modules-commonjs": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.0.tgz",
+      "integrity": "sha1-DYOUApt9xqvhqX7xgeAHWN0uXYo=",
+      "requires": {
+        "babel-plugin-transform-strict-mode": "6.24.1",
+        "babel-runtime": "6.26.0",
+        "babel-template": "6.26.0",
+        "babel-types": "6.26.0"
+      },
+      "dependencies": {
+        "babel-code-frame": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+          "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+          "requires": {
+            "chalk": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+            "esutils": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
+            "js-tokens": "3.0.2"
+          }
+        },
+        "babel-runtime": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
+          "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+          "requires": {
+            "core-js": "2.5.0",
+            "regenerator-runtime": "0.11.0"
+          }
+        },
+        "babel-template": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-template/-/babel-template-6.26.0.tgz",
+          "integrity": "sha1-3gPi0WOWsGn0bdn/+FIfsaDjXgI=",
+          "requires": {
+            "babel-runtime": "6.26.0",
+            "babel-traverse": "6.26.0",
+            "babel-types": "6.26.0",
+            "babylon": "6.18.0",
+            "lodash": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz"
+          }
+        },
+        "babel-traverse": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-traverse/-/babel-traverse-6.26.0.tgz",
+          "integrity": "sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=",
+          "requires": {
+            "babel-code-frame": "6.26.0",
+            "babel-messages": "https://registry.npmjs.org/babel-messages/-/babel-messages-6.23.0.tgz",
+            "babel-runtime": "6.26.0",
+            "babel-types": "6.26.0",
+            "babylon": "6.18.0",
+            "debug": "2.6.8",
+            "globals": "9.18.0",
+            "invariant": "https://registry.npmjs.org/invariant/-/invariant-2.2.2.tgz",
+            "lodash": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz"
+          }
+        },
+        "babel-types": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-types/-/babel-types-6.26.0.tgz",
+          "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
+          "requires": {
+            "babel-runtime": "6.26.0",
+            "esutils": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
+            "lodash": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+            "to-fast-properties": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-1.0.3.tgz"
+          }
+        },
+        "babylon": {
+          "version": "6.18.0",
+          "resolved": "https://registry.npmjs.org/babylon/-/babylon-6.18.0.tgz",
+          "integrity": "sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ=="
+        },
+        "regenerator-runtime": {
+          "version": "0.11.0",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.0.tgz",
+          "integrity": "sha512-/aA0kLeRb5N9K0d4fw7ooEbI+xDe+DKD499EQqygGqeS8N3xto15p09uY2xj7ixP81sNPXvRLnAQIqdVStgb1A=="
+        }
+      }
+    },
     "babel-plugin-transform-es2015-parameters": {
       "version": "https://registry.npmjs.org/babel-plugin-transform-es2015-parameters/-/babel-plugin-transform-es2015-parameters-6.24.1.tgz",
       "integrity": "sha1-V6w1GrScrxSpfNE7CfZv3wpiXys=",
@@ -549,6 +704,31 @@
         "babel-runtime": "6.25.0"
       }
     },
+    "babel-plugin-transform-object-rest-spread": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-transform-object-rest-spread/-/babel-plugin-transform-object-rest-spread-6.26.0.tgz",
+      "integrity": "sha1-DzZpLVD+9rfi1LOsFHgTepY7ewY=",
+      "requires": {
+        "babel-plugin-syntax-object-rest-spread": "6.13.0",
+        "babel-runtime": "6.26.0"
+      },
+      "dependencies": {
+        "babel-runtime": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
+          "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+          "requires": {
+            "core-js": "2.5.0",
+            "regenerator-runtime": "0.11.0"
+          }
+        },
+        "regenerator-runtime": {
+          "version": "0.11.0",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.0.tgz",
+          "integrity": "sha512-/aA0kLeRb5N9K0d4fw7ooEbI+xDe+DKD499EQqygGqeS8N3xto15p09uY2xj7ixP81sNPXvRLnAQIqdVStgb1A=="
+        }
+      }
+    },
     "babel-plugin-transform-react-display-name": {
       "version": "6.25.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-react-display-name/-/babel-plugin-transform-react-display-name-6.25.0.tgz",
@@ -582,6 +762,15 @@
         "babel-runtime": "6.25.0"
       }
     },
+    "babel-plugin-transform-strict-mode": {
+      "version": "6.24.1",
+      "resolved": "https://registry.npmjs.org/babel-plugin-transform-strict-mode/-/babel-plugin-transform-strict-mode-6.24.1.tgz",
+      "integrity": "sha1-1fr3qleKZbvlkc9e2uBKDGcCB1g=",
+      "requires": {
+        "babel-runtime": "6.25.0",
+        "babel-types": "6.25.0"
+      }
+    },
     "babel-polyfill": {
       "version": "6.23.0",
       "resolved": "https://registry.npmjs.org/babel-polyfill/-/babel-polyfill-6.23.0.tgz",
@@ -761,11 +950,12 @@
       }
     },
     "bcrypt-pbkdf": {
-      "version": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
       "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
       "optional": true,
       "requires": {
-        "tweetnacl": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz"
+        "tweetnacl": "0.14.5"
       }
     },
     "bl": {
@@ -804,6 +994,12 @@
         "inherits": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz"
       }
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       "dev": true
     },
     "tunnel-agent": {
-      "version": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
       "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
       "requires": {
         "safe-buffer": "5.1.1"
       }
     },
     "tweetnacl": {
-      "version": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
       "optional": true
     },
diff --git a/package.json b/package.json
index fd0e657629..8857409432 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "compare-sets": "^1.0.1",
     "core-decorators": "^0.19.0",
     "diff": "3.2.0",
-    "dugite": "^1.45.0",
+    "dugite": "1.49.0",
     "etch": "^0.12.4",
     "event-kit": "^2.3.0",
     "fs-extra": "^2.1.2",
diff --git a/test/deferred-callback-queue.test.js b/test/deferred-callback-queue.test.js
deleted file mode 100644
index e127feb0e6..0000000000
--- a/test/deferred-callback-queue.test.js
+++ /dev/null
@@ -1,54 +0,0 @@
-import DeferredCallbackQueue from '../lib/deferred-callback-queue';
-import {Emitter} from 'event-kit';
-
-describe('DeferredCallbackQueue', function() {
-  let callbackSpy, emitter, queue;
-  beforeEach(() => {
-    callbackSpy = sinon.spy();
-    emitter = new Emitter();
-    queue = new DeferredCallbackQueue(20, callbackSpy, {
-      onDidFocus: cb => {
-        return emitter.on('focus', cb);
-      },
-      onDidBlur: cb => {
-        return emitter.on('blur', cb);
-      },
-    });
-  });
-
-  describe('when focused', function() {
-    it('calls the specified callback immediately', function() {
-      emitter.emit('focus');
-      queue.push('a', 'b', 'c');
-      assert.deepEqual(callbackSpy.args[0][0], ['a', 'b', 'c']);
-    });
-  });
-
-  describe('when blurred', function() {
-    it('calls the specified callback after a specified quiet time', async function() {
-      emitter.emit('blur');
-      queue.push(1);
-      await new Promise(res => setTimeout(res, 10));
-      queue.push(2);
-      await new Promise(res => setTimeout(res, 10));
-      queue.push(3);
-      await new Promise(res => setTimeout(res, 10));
-      assert.isFalse(callbackSpy.called);
-      await new Promise(res => setTimeout(res, 20));
-      assert.deepEqual(callbackSpy.args[0][0], [1, 2, 3]);
-    });
-
-    it('calls the specified callback immediately when focus is regained', async function() {
-      emitter.emit('blur');
-      queue.push(4);
-      await new Promise(res => setTimeout(res, 10));
-      queue.push(5);
-      await new Promise(res => setTimeout(res, 10));
-      queue.push(6);
-      await new Promise(res => setTimeout(res, 10));
-      assert.isFalse(callbackSpy.called);
-      emitter.emit('focus');
-      assert.deepEqual(callbackSpy.args[0][0], [4, 5, 6]);
-    });
-  });
-});