Removed dialect specific code for regexp functions and fixed broken 0.9.2 version

Merge pull request #86 from mikeengland/fix-broken-version

Fixes #85 Bundle requirements.txt in the dist

Added support for regexp_like and split_part functions

Merge pull request #77 from x8lucas8x/add-split-and-regex-like-functions

Add split and regexp_like functions for different dialects

Added Amazon Redshift dialect.

v0.8.0

Bumped pypika to v0.8.0