Bump version to 4.0.0

[tvpeter]

Description

This PR bumps the CLI version to 4.0.0

Changelog notice

• Bumps project version to 4.0.0

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.45%. Comparing base (8185055) to head (0f04e94).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #306   +/-   ##
=======================================
  Coverage   57.45%   57.45%           
=======================================
  Files          22       22           
  Lines        3695     3695           
=======================================
  Hits         2123     2123           
  Misses       1572     1572           

Flag	Coverage Δ
rust	57.45% <ø> (ø)

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