Go 1.13 was accidently added, this backs it back out.
I don't think there's really much impact from this but I would prefer it
not be in there for this release.
* Fix#406: reconnect() can be called while still connected
* Add memberMap to speed up member queries
* Fix error return value and remove deletion
* Fix GuildAdd member map initialization edge case
* Add rate limit buffering support
- Break request into requestInner
- Break LockBucket into LockBucketObject
- Change getBucket to GetBucket so it can be externally accessed
- Add RequestBuffer interface
- Add RequestBuffer pointer to Bucket struct
- Add RequestPostWithBuffer() function to Session
* Remove internal implementation, export ratelimiter instead
* Add heartbeat ACK response and error handling
- Error when sending a heartbeat now triggers a reconnection
- Op7 now triggers a reconnection
- Session now tracks the last heartbeat ACK that was recieved. If the
last ACK is more than FailedHeartbeatAcks*heartbeatinterval in the past,
this is treated as a dead connection and a reconnection is forced.
* Address @iopred comments
* Added ratelimiter
Handles the new ratelimit headers
- X-RateLimit-Remaining
- X-RateLimit-Reset
- X-RateLimit-Global
* Pad only reset time with a second
* Moved ratelimiter out of internal package
* Change for loop, move global ratelimit check inside sleep check
* Moved ratelimiter locking to getBucket
* Added global bucket
* Changed how bucket id's are done
Now each request function will need to specify the bucket id if the
endpoint contains minor variables
* Allow empty bucketID in request
* Remove some uneeded Endpoint* function calls
* Added test for global ratelimits
* Fixed a silly little mistake causing incorrect ratelimits
* Update test comments, Fixed treating a endpoint as 2 in ratelimiting
* Use date header from discord instead of relying on sys time sync
* Update all REST functions to use RequestWithBucketID
* Embed mutex into bucket
* Added webhook and reaction buckets
Also cleaned up identify sending so there's now a function that handles
it instead of duplicate code. Renamed handshake* structs to identify*
structs to make naming match up.
