Update TerrariaChatRelay to v1.0.0

[xNarnia]

I had forgotten to update the AssemblyInfo from 0.9.2 to 1.0.0 last time... So I updated the plugin to 1.0.0 instead!.... Just kidding!

This is an actual v1.0.0 release with a ton of changes. The AssemblyInfo has been updated to reflect the version.

Thank you!