[FEATURE]: Merge MELTOOLS

[rzehumat]

Feature description

There is a (now discontinued) project called MELTOOLS, related to a similar purpose as melkit. To avoid both re-inventing of the wheel and 15 standards problem, it might help to review features in meltools and merge the useful here.

Additional considerations

I've talked with the original developer of meltools and he supported the abovementioned idea.

Proposed solution

I think I could do it, but can't promise when.

• check for useful modules in meltools
• merge the useful ones into this project
  • code should be ready, just fix pep8 (and possibly some other code-style-related issues)
  • add examples
  • add documentation