Regex Performance Improvements, Tests

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.55172% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 92%. Comparing base (41b8cdc) to head (1c36d92). Report is 26 commits behind head on bbot-2.0.

Files	Patch %	Lines
bbot/core/helpers/regex.py	91%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## bbot-2.0 #1393 +/- ## ========================================= - Coverage 92% 92% -0% ========================================= Files 343 343 Lines 23106 23213 +107 ========================================= + Hits 21212 21310 +98 - Misses 1894 1903 +9 ```

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