#62 add Store.get(key) SPI tests
#62 add Store.get(key) SPI tests
#86 changes related to comments for https://github.com/aurbroszniowski/ehcache3/commit/bd74d722c583f7dcce959671d76958f871c9a283#commitcomment-7999646
#86 Added test for containsKey(K key)
#86 Added test for put(K key, V value)
#86 Added test for putIfAbsent(K key, V value)
#86 Added test for remove(K key)
#86 Added test for remove(K key, V value)
#86 Added test for clear()
Added CacheException test for previous tested methods
#86 Added test for close() and destroy()
Added missing javadoc
#86 Added test for Replace(key, value) and Replace(key, value, value)
#86 Added test for iterator()
#86 Moved test to store package
#86 Added test for ValueHolder.value()
#86 Added test for ValueHolder.creationTime()
#86 Changed package name
#86 Added test for ValueHolder.lastAccessTime()
#86 Added test for ValueHolder.hitRate()
#86 Added test for Store.Provider.createStore()
#86 Added test for Store.Provider.releaseStore()