Merge pull request AltBeacon#557 from AltBeacon/2.12-release

Prepare for 2.12 release

Merge pull request AltBeacon#557 from AltBeacon/2.12-release

Prepare for 2.12 release

Persist ScanState to temp file then move to perm file

Prevent Android O from blocking intent/notification conversion

- use BeaconLocalBroadcastProcessor instead of BeaconIntentProcessor when ScanJob is used

Prevent crash on ranging by serializing ranging callback for ScanJobs

Merge branch 'scheduled-job-scanning' of github.com:AltBeacon/android…

…-beacon-library into scheduled-job-scanning

Merge pull request AltBeacon#530 from AltBeacon/refactor-lollipop-defer

Refactor away `mScanDeferredBefore` flag

Merge pull request AltBeacon#507 from AltBeacon/fix-failure-to-stop-s…

…cans

Fix failure to stop scans

Merge branch 'master' into separate-process-service-support

Merge pull request AltBeacon#491 from AltBeacon/no-scanning-restarts-…

…on-duplicate-detection-devices

Don't restart scanning if device detects duplicate advertisements per scan