[artifactory-release] Release version 3.0.0.RC1
Revert to 3.0.0.BUILD-SNAPSHOT
INT-3227 Fix Race Condition for WARN Log

JIRA: https://jira.springsource.org/browse/INT-3227

In MessagingTemplate.TemporaryReplyChannel, it was possible
the `clientHasReceived` boolean could be set by the other
thread after normal message receipt, but before the sender
tests it for the purpose of emitting a duplicate reply log
message.

Capture the boolean value of `clientHasReceived` before
counting down the latch.
INT-3219: Document Retry Exception Classification

JIRA: https://jira.springsource.org/browse/INT-3219

* Upgrade to Spring Retry 1.0.3
* Add a section to Reference Manual about Retry Exception Classification
INT-3223 Tail - Exclusive Attributes

JIRA: https://jira.springsource.org/browse/INT-3223

Disallow 'native-options' if any of the attributes
required for the Apache implementation are specified.
INT-3223 Polishing

JIRA: https://jira.springsource.org/browse/INT-3223

Don't use primitives in Tail factory bean setters so that the placeholders
for attributes that force the Apache implementation can resolve to "".

Test for an empty string in native-options and don't set.
INT-3231: Fix Tail setters types for SPR 3.1.x

JIRA: https://jira.springsource.org/browse/INT-3231
INT-3228: Remove Previous versions' Deprecations

JIRA: https://jira.springsource.org/browse/INT-3228

Remove elements that were deprecated in earlier
versions; see the migration guide for more information

https://github.com/spring-projects/spring-integration/wiki/Spring-Integration-2.2-to-3.0-Migration-Guide

INT-3228: Revert FileTransferMH#setTempDirectory
INT-3221: Deprecate MessageTransformingCI

JIRA: https://jira.springsource.org/browse/INT-3221
INT-3220,INT-3224: Fix Twitter & Channel docs

JIRA:
https://jira.springsource.org/browse/INT-3224
https://jira.springsource.org/browse/INT-3220
INT-3221 Polishing

Remove unused import.

JIRA: https://jira.springsource.org/browse/INT-3221
INT-3230 Added support for 'load-balancer-ref' attribute
 of the 'channel' element. Added tests and updated documentation

INT-3230 addressed PR comments
INT-3232: RedisQMDE: Polish Log Exceptions

JIRA: https://jira.springsource.org/browse/INT-3232

Previously, in the `RedisQueueMessageDrivenEndpoint` all `Exceptions` on `rightPop` operation
were logged with `error` level independently of the state of the Endpoint.

Add `if...else` and log with `debug`, if the Endpoint isn't active and don't publish the event.
INT-3043 Add Endpoint Quick Reference Table

JIRA: https://jira.springsource.org/browse/INT-3043

INT-3043: Polishing