Update Lua bindings for GamePlay.
Merge pull request #1008 from kwhatmough/next

Update Lua bindings for GamePlay.
Updated CHANGES.md to include all v1.7.0 CHANGES.md and update the README.md for this release.
Merge pull request #1009 from seanpaultaylor/next

Updated CHANGES.md to include v1.7.0 CHANGES.md and update the README.md