Initial support for Date type

0.0.3

Adding Date as an available type

Removing gitmodule's for CI build

Removing gitmodule for CI build. Apache Arrow for Swift is in a subfolder in the arrow repo and currently Swift Package Manager does not support this. Copying Arrow source into vendor folder until a better resolution to this issue is found.

Initial Version

Full Changelog: https://github.com/abandy/swiftqe/commits/0.0.1