PushParser refactoring
- simplified implementation, removed couple unused methods
- type safe TapCallback - no need for reflection, no problems with proguard
Restored old TapCallback api, still supporting simplified operations.
Added missing (removed earlier) methods in PushParser, implemented old TapCallback handling on top of simplified PushParser.
Removed unnecessary object allocations for TapCallback api
Merge pull request #128 from zbsz/parser_refactoring

PushParser refactoring