v2.0.0 - Allow any base branch

Merges #21: Rewrite branch logic to allow base branches other than master

Note V2.0.0 is a major version bump, requiring a minor configuration change to the .github/workflows/git.yml file. Change:

name: Git Checks

on: [push]

to:

name: Git Checks

on: [pull_request]

Branches only and block squash commits

• feat: Block --squash commits
• fix: Only check branches, not tags or other refs

Always pin

Pinning upstream dependency and being sure to fail when the git commands fail.

Don't forget v1

First version compares current branch with master only, but that will be fine for most projects.