Removes ability to call the CLI without subcommand

[coordt]

BREAKING CHANGE: You must use bump-my-version bump

[github-actions]

Version hint: minor
Current version: 0.18.3
New version (when merged): 0.19.0

_{Comment ID: Display the version hint-auto-generated}

[github-actions]

PR Preview Action v1.4.7
🚀 Deployed preview to https://callowayproject.github.io/bump-my-version/pr-preview/pr-151/
on branch gh-pages at 2024-03-12 14:57 UTC

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.43%. Comparing base (6f6c606) to head (e56c944).
Report is 2 commits behind head on master.

❗ Current head e56c944 differs from pull request most recent head ae1732b. Consider uploading reports for the commit ae1732b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #151      +/-   ##
==========================================
- Coverage   93.57%   93.43%   -0.15%     
==========================================
  Files          24       24              
  Lines        1494     1477      -17     
  Branches      299      294       -5     
==========================================
- Hits         1398     1380      -18     
- Misses         67       68       +1     
  Partials       29       29              

Flag	Coverage Δ
python-3.10	93.43% <100.00%> (-0.15%)	⬇️
python-3.11	93.43% <100.00%> (-0.15%)	⬇️
python-3.8	93.43% <100.00%> (-0.15%)	⬇️
python-3.9	93.43% <100.00%> (-0.15%)	⬇️

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