Feature Request: Asyncio support

[bitnom]

It would be nice to have sqlitedict methods as co-routines. Thoughts?

[longnetwork]

sqlitedict runs in threads with a single connection or in processes with multiple connections. This works without using locks in the python code. all necessary synchronizations are at the sql driver level. Great job! I gave up on leveldb because of the inability to work with multiprocesses. sqlitedict - no problem. I use it to cache large constants on disk (smartcontract codes)