Fix inconsistent parameter type

The parameter type of abios.Client.SetRate and abios.AbiosSDK.SetRate did not match (which they very much should)

Requests are sent concurrently

Requests in the request queue of the request_handler are now popped and sent in their own go routine, i.e. concurrently.

Minor bug

client.SetRate was not part of the AbiosSdk interface so it could not be used if client was declared unitiliazed.

I.e

a := abios.New()
a.SetRate(1,1) // Works

var b abios.AbiosSdk
b = abios.New()
b.SetRate(1, 1) // Doesn't work

Public release

Initial release.

Endpoints:

• oauth/access_token
• games
• series
• seriesById
• matchesById
• tournaments
• tournamentsById
• substagesById
• teams
• teamsById
• players
• playersById
• rostersById
• search
• incidents
• incidentsBySeriesId

And all their parameters, including play-by-play.

Features:

• Automatic re-authentication
• Rate limiting