Added @Override on some client class methods
Fix #2648 : NPE when host not resolved in Address
Added runner/category on test
Resolved checkstyle issues
Minor cleanup
fixes #2686
#2674, utf decoder fixed
fixed checkstyle for Spring with suppressions
Merge pull request #2704 from hasancelik/feature/master/checkstyleSpring

fixed checkstyle for Spring with suppressions
utf decoding optimizations
Merge pull request #2681 from pveentjer/fix/3.x/2648-npe-startup

Fix/3.x/2648 npe startup
additional optimization when reading decoding Strings
invariant checking enabled again
test contain description in its name
removed demo related scripts/toys
Merge pull request #2693 from gurbuzali/xa-recovery-fix/3.3

fixes #2686
Merge pull request #2711 from jerrinot/bugs/2674/utf8

Bugs/2674/utf8