restored type checking
Merge pull request #157 from timeck/restoreTypeChecks

restored type checking in Store.bulkComputeXXX() methods
remove CacheLoader interactions from Ehcache.putIfAbsent() and
Ehcache.replace(K, V)
Merge pull request #153 from timeck/putIfAbsentLoader

remove CacheLoader interactions from Ehcache.putIfAbsent() and Ehcache.replace(K, V)
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