Fix issue when function has no namespace

Fixes

• If a function has no namespace, it will no longer fail by trying to add None to a string.

Fix locked database issues

Changes

• Better handling of locked SQLite databases

Fix issues across sessions

Changes

• The function name instead of the function object is for the fingerprint

Fixes

• SQLite will now commit data

Fix issues with threads

Changes

• Better handling of unexpected race conditions when using threads

Cache engines

Features

• Customisable cache engines:
  • Improved in-memory support
  • SQLite support
  • Memcached support
• Define separate groups for use within the same engine

Changes

• No longer allow generators as hash keys as they can cause collisions
• Set a default timeout and size on cache creation

Check if cache already exists

• Adds the cache.exists() function

Initial Release

• Cache functions, generators, methods and lambdas
• Set which parameters to cache
• Ignore parameters from cache
• Take parameters as int, str, slice and regex
• Set cache timeout
• Set maximum cache size
• Convert generator output to tuple
• Delete all cache
• Delete individual parts of cache
• Get cache misses/hits

Legacy Release

This is quite complex with a lot of features. Some attempt was made to allow cache to be deleted, but it was a bit messy.