v0.2.2

• Tweak: remove unnecessary lru_cache and make code more compatible with Python 2.

v0.2.0

• New: unoccupied.BaseNameFinder class - Let general name finder creation more directly.
  • It's also decrease a lot of duplicated code in built-in name finders.
• Change: keyword argument nobase rename to skipbase.

v0.1.1

• Let occupied normalized to frozenset before inject to name_finder. (orig norm to a set)
• Some small tweaks.

v0.1.0

init