* fix: allow underscores in formula name
I was trying to create two formulas per release. One signifying the latest and
another with the version explicitly: formula.rb and formula@v0.0.0.rb
The filenames are fine but the formula name for the explicit version
was created as FormulaATv0.0.0 which isn't valid Ruby.
Looking at the function history I couldn't find why underscores were being replaced
since underscores are valid for Ruby identifiers. I opted to replace dots in a formula with
underscores
- 1399a39603
- https://ruby-doc.org/docs/ruby-doc-bundle/Manual/man-1.4/syntax.html#ident
* test: add test for version in formula name
I think underscores are removed to make the Formula name cleaner
* test: re-add old test
a9ce8f89d4