Fix author info

No code changes. Just updating the author info...

Some changes

• Wrapper methods for sending inline emojis
• Some minor changes

Some more feature additions

Changes made by user rgaida

• Caching
• $attachments and $source_guid parameter order switched in some methods for usability
• Doc block comments
• @ mentions attachment functionality
• etc.

Fixes regression error

• POST results broke after fixing image service requests; both work fine now 👍

A few [breaking] changes

• Namespace changed from GroupMeApiClient to simply GroupMeApi
• Image service is fixed, thanks to user rgaida

First beta release

A few kinks left to work out...