Jukoro 0.1.2 release

It happened - first public release of Jukoro (not on PyPi but still).

It is an experiment and I'll do my best working on it.

Features highlight (PostgreSQL-focused)

• unified tables structure in PostgreSQL storing data in a single per table jsonb field
• out-of-the-box way to keep historical data in tables
• out-of-the-box support for psycopg2 named cursors
• single per-database sequence generator for objects identifiers
• out-of-the-box support for created/updated/deleted timestamps
• indices and constraints support for data stored in jsonb field
• connection to PostgreSQL always operate with timestamps in UTC
• PostgreSQL schema support
• way to introspect current database state
• way to prepare sql queries to synchronize database state and entities (models) declarations (queries to create missed tables/indices/constraints and to drop orphaned tables/indices/constraints)
• separation of concerns to work with PostgreSQL (explicit ways to work with pool/connection/transaction/results, to describe entities (models in terms of Django's ORM), to introspect database, to create customized sql queries)

Packages and modules

• jukoro.pg - package to work with PostgreSQL built on top of psycopg2
• jukoro.redis - package to work with Redis having several useful helpers
• jukoro.arrow - package built on top of arrow library
• jukoro.decorators - module containing some useful decorators
• jukoro.json - abstraction built on top of Python's stdlib json
• jukoro.pickle - abstraction built on top of Python's stdlib cPickle
• jukoro.base32 - abstraction built on top of base32_crockford library
• jukoro.email - email helpers
• jukoro.structures - some useful structures
• jukoro.utils - utilities

I am going to use it in project I'm currently working on (it was never used).