Updates to dictionary lists

[shaleh]

• Create dedicated pytest list
• Add some new entries to the python list:
  • 'checkable' comes from '@runtime_checkable', a decorator introduced.
    in python3.8 and also available in typing_extensions.
  • 'exc' comes from the default argument names for 'exit'
    functions.
  • 'tokenize' is a stdlib module used by this package.
  • 'unittest' is a stdlib module.
• Remove a couple of duplicate entries from the technical list.
• Add some new entries to the technical list:
  • 'filesystem' should be obvious.
  • 'func' is common shorthand for 'function'.
  • 'lua' is the name of an embeddable programming language.
  • 'runtime' is a common word to differentiate from e.g. compile-time.
    It's also used in the '@runtime_checkable' decorator.
  • 'ttl' stands for Time-to-Live, and is a common acronym seen in many
    places, including DNS and caching.
  • 'util' is a commonly used name in programming for a file full of
    utility functions.
• Removed some entries from this package's custom allowlist that are
  already specified elsewhere.

More from #55.

[MichaelAquilina]

please rebase :) I'll merge once thats passing