2.2.0.M2

Change log:

ee7d0cd Upgrade to SF 5.2.0.M2; SD More.M4
3648396 GH-994: Improve test
1098d27 Fix RejectedExecutionException during close
f576df9 Fix race in test
552b818 Fix new package tangle
329734f @RabbitListener override acknowlegment mode
cdbdb9f Spring dependencies to snapshots
51e556f Fix Checkstyle violation in MListenerAdapterTests
8ac8ea1 GH-972: Add new MLA.buildListenerArguments()
0726a34 Fix new Sonar issues
290e091 Add Spring Data projection support
1e1fa6a More AssertJ hasSize() Conversions
4ef8e96 Use assertThatThrownBy() Vs. ExpectedException
c1ec3e0 More AssertJ Conversion
7472f1b Convert tests to AssertJ
529bb63 Add typed header getter method
d3ded64 Fix Sonar issue
fc70ba3 GH-922: Add Batch-mode @RabbitListener
e3d37e8 Configurable Key/Trust Store Algorithm
2588869 Fix new Sonar smells