feat(conventional_commits): use and proper support for conventional c…

[woile]

…ommits v1.0.0

Types of changes

• [] Bug fix
• New feature
• Refactoring
• Breaking change (any change that would cause existing functionality to not work as expected)
• Documentation update
• Other (please describe)

Description

Add proper support for conventional commits 1.0
This does not introduce a breaking change for commitizen.

Checklist

• Add test cases to all the changes you introduce
• Run ./script/format and ./script/test locally to ensure this change passes linter check and test
• Test the changes on the local machine manually

Related Issue

Closes #199

[codecov]

Codecov Report

Merging #235 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #235   +/-   ##
=======================================
  Coverage   95.70%   95.71%           
=======================================
  Files          34       34           
  Lines         955      957    +2     
=======================================
+ Hits          914      916    +2     
  Misses         41       41           

Flag	Coverage Δ
#unittests	95.71% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
commitizen/__version__.py	100.00% <100.00%> (ø)
...en/cz/conventional_commits/conventional_commits.py	98.41% <100.00%> (ø)
commitizen/git.py	95.55% <100.00%> (+0.10%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 20449e9...a2188e5. Read the comment docs.