Merge branch 'maciejlach-master'

Merge branch 'maciejlach-master'

Version update

API redesign: enable custom serializers & deserializers (relates to e…

…xxeleron#35)

Merge pull request exxeleron#34 from exxeleron/qpython-1.1-dev

qpython 1.1

Merge branch 'master' into qpython-1.1-dev. Resolves (exxeleron#30)

Enhancement: configuration of serialization for single element strings

Travis: Migrating from legacy to container-based infrastructure

PyPI integration

Documentation update: pandas type hinting