Allow the user to set timezone
mend
Clean up the sqlstring escapedate function
Added changelog entry for timezone
Merge pull request #2024 from sequelize/timezone

Allow the user to set a custom time zone
[ci skip] Moved feature log for timezone to next
Replaced lingo with inflection, and took a small step towards more consistent names
Updating tests to fit new naming scheme
More changelog entries to the correct place, fix the remaining test