=rem #3706 Avoid loss of floating point precision in PhiAccrualFailureDetector

(cherry picked from commit fd0fac263fa0a90875278997a8814c758d191f51)
Merge pull request #1835 from akka/wip-3706-backport-patriknw

=rem #3706 Avoid loss of floating point precision in PhiAccrualFailureDector (backport)
=rem #3633 Fix race between EndpointWriter Terminated and TakeOver
Merge pull request #1861 from akka/wip-3633-failed-systemmessagedeliverynopassive-2.2-ban

(Backport) =rem #3633 Fix race between EndpointWriter Terminated and TakeOver
=act #3720 Optimze actor creation speed and actor size
Merge pull request #1852 from akka/wip-3720-actor-size-and-speed-regression-ban

=act #3720 Optimze actor creation speed and actor size
+rem: Implement Quarantine piercing

 - Added refuseUid support in Akka protocol and EndpointManager
 - The AkkaProtocolTransport interface is now a first-class citizen in remoting and endpoint actors
 - The AkkaProtocolTransport interface is now a first-class citizen in endpoint actors
(cherry picked from commit c9fcc5e)
Adding ProblemFilters for MiMa
Merge pull request #1884 from drewhk/wip-3730-quarantine-piercing-backport-drewhk

+rem: Implement Quarantine piercing (backport)
+doc #3656 correcting the TypedActor documentation

backport from 2.3 (master) by Roland Kuhn, #3784
Merge pull request #1914 from akka/wip-2.2-3784-typed-actor-docs-∂π

Wip 2.2 3784 typed actor docs ∂π
=act #3562: Do not generate Terminated when unwatched in preRestart

 - also avoid duplicate DWN for parent
(cherry picked from commit b0ab6f4)
Add MiMa filters for internal method tellWatchersWeDied
Merge pull request #1973 from drewhk/wip-3562-mistaken-terminated-backport-drewhk

=act #3562: Do not generate Terminated when unwatched in preRestart (backport)
update .gitignore to match a few release-2.3+ things
=doc #3896 add gracefulStop changes migration guide
Merge pull request #2038 from akka/wip-3896-migration-guide-∂π

=doc #3896 add gracefulStop changes migration guide
=rem #3787: Fix wrong comparison of loglevels in remote events logging
=pro #3904 do not leak internal repositories during staging
Merge pull request #2046 from akka/wip-2.2-pomIncludeRepositories-∂π

=pro #3904 do not leak internal repositories during staging