Merge pull request #144 from snoopyjc/master

Proposed v1.15.0

Prepare v1.14.9 for release

Prepare v1.14.8 for release

Prepare v1.14.7 for release

Prepare v1.14.6 for release

Merge pull request #84 from aichaos/feature/sessions

Add official Redis driver for RiveScript Sessions

More things in the MANIFEST

Prepare v1.14.3 for release

Bugfix with add tag, v1.14.2

Prepare v1.14.1 for release