charm-tools: add missing dep wheel, update license

[vvvvv]

brew install --build-from-source charm-tools failled to build.
Further investigation showed that dependency jsonschema needed wheel pkg installed.

Processing /private/tmp/charm-tools--jsonschema-20210211-36312-hkfrc1/jsonschema-2.5.1
[...]
      ERROR: Command errored out with exit status 1:
       command: /usr/local/Cellar/charm-tools/2.7.8/libexec/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/tmp/pip-wheel-2ie24vr6/vcversioner/setup.py'"'"'; __file__='"'"'/private/tmp/pip-wheel-2ie24vr6/vcversioner/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/tmp/pip-wheel-yc1xtp0n
           cwd: /private/tmp/pip-wheel-2ie24vr6/vcversioner/
      Complete output (6 lines):
      usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
         or: setup.py --help [cmd1 cmd2 ...]
         or: setup.py --help-commands
         or: setup.py cmd --help

      error: invalid command 'bdist_wheel'

I don't know why this did build before but I suspect wheel was by default installed into the virtualenv alongside setuptools etc.

• Have you followed the guidelines for contributing?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing brew install <formula>)?

---

[carlocab]

Thanks again for your help, @vvvvv.

FYI, for your future PRs, please homebrew/core style when writing commit message headings. We put the name of the formula first. [Ref] For example, yours would've been something like

charm-tools: add missing wheel dependency, update license

[SMillerDev]

Thanks @vvvvv ! Without contributions like yours it'd be impossible to keep homebrew going with the high standards that users have come to expect from the project. You can feel good knowing that you've made the world a tiny bit better for homebrew users around the world! 👍 🎉

[BrewTestBot]

🤖 A scheduled task has triggered a merge.

[BrewTestBot]

❌ @carlocab bottle request for charm-tools failed.