Add KNX datapoint type for RGB color (232.600)
Update to new calimero version with support for 3-byte RGB data type
Fix some test with new lib version
Add test for 3-byte rgb datatype
Merge remote-tracking branch 'origin/master'

Conflicts:
	bundles/binding/org.openhab.binding.knx.test/src/test/java/org/openhab/binding/knx/internal/config/KNXCoreTypeMapperTest.java
	bundles/binding/org.openhab.binding.knx/src/main/java/org/openhab/binding/knx/internal/dpt/KNXCoreTypeMapper.java
Merge pull request #1358 from tobiaswegner/master

[KNX] Add 3 byte rgb datapoint type 232.600 to knx binding