#149 fix some javadoc and compiler warnings
Merge pull request #160 from lorban/issue-149

 #149 fix some javadoc and compiler warnings
 #35 on-heap by value storage
 #35 rework tests
 #35 fix compiler warning
 #35 improve exceptions
 #35 add serializer exception test
 #35 add by value holder hashcode test
 #35 rename by ref value holder
 #35 refactor OnHeapValueHolder hierarchy
 #35 refactor OnHeapStoreBy(Ref|Value)Test to extract common code
 #35 remove duplicate serviceConfigs array creation
Merge pull request #155 from lorban/issue-35

Issues #35 & #42 support byValue caching on OnHeapStore
Initial start at CRUD tests
More Ehcache CRUD tests
Issue #147 - More Ehcache CRUD tests - complete get() suite
Issue #147 - More Ehcache CRUD tests - comment get() suite, add omitted cases
Issue #147 - Refactor to split get from put tests
Issue #147 - Complete put tests
Issue #147 - Begin remove(key) tests