2.1.0.M2 (Milestone)

Change log:

• 8df8260 Upgrade to Spring Framework 5.1.0.RC2
• d7e0b9d AMQP-828: Fix race, removing the shutdown listener
• d5663f4 AMQP-828: AutoRecovery with template.receive()
• dfcfda1 AMQP-825: Add Reply RetryTemplate
• d4c8377 SF to 5.0.1.B-S and Fix @eventlistener tests
• bdc75e4 AMQP-827: Fix @rl reply Message<?> conversion
• 9ddf6d6 Add @NonNullApi where appropriate
• 3c1466b Fix broken links in doc
• 9e548df Upgrade/Fix config for asciidoctor plugin
• f259473 Suppress JSR305 Compile Warnings
• 0a943f6 @sendto: Add property-placeholders support
• 7e77ae3 Add returned message to correlation data
• 4afefc4 Add Future<?> to CorrelationData