0.13
+ move category to aps for apns

0.12
- removed tags from sending
* updated docs on an input parameter 'tag'

0.11
- removed tags from subscriptions
* tag is now used interchangeably with device_id
* device is now always specified when sending

0.10
- removed uuid from xiva_send_messages
* tags for all new subscriptions and sending (transitional measure)
* tags moved to a body in subscription

0.09
+ sending with a tag or a device_id
+ added a fallback client name
* explicit payload repackaging
* changed gcm message format

0.08
- removed logging of user tokens in subscription
- removed logging of server tokens altogether
* authorization tokens moved to headers
* subscription tag as a separate parameter

0.07
+ response logging for the debug send mode

0.06
* tagging with a UUID instead of a token

0.05
* minor text fixes

0.04
+ optional device argument in subscription
* state log reinitialization

0.03
- removed extra logging line for errors
* minor optimizations
* minor style fixes

0.02
+ Direct::Trace tracing
+ Direct::Modern dependency
+ documentation
- removed logging of tokens
* switched to messages log
* switched to async delivery mode
* refactored token getters
* minor style fixes
unversioned hotfix for unsubscribe

0.01
First potentially working draft
