Rename deviceids to plugin
Plugin mechanism
Check device ids
Merge branch 'mail_sha1'
Google Play Store Readme
Cleaned OnClickListener in Readme
Merge branch 'update_doc'
Passing Context instead of Activity
New version 3.6.1
Changed default value tracking_enabled
Updated pom.xml for maven
Replace static logger with factory
Merge branch 'context_application'
Clarify preinstallation tracker usage
Change {Tracker} to {TrackerToken}
Merge branch 'updated_preinstall_doc'
package sending was decoupled and moved to ActivityHandler

Looks like this was migrated out when buffering of packages was implemented.
Missing imports
Merge branch 'correct-comment'
Event object