#127 genericize abstract StoreSPITest
 #127 fix incorrect getKeyType() calls
Merge pull request #129 from lorban/issue-127

Issue #127 StoreSPITest should use type parameters
added new test files for BulkCompute and BulkComputeIfAbsent
added new test files for BulkCompute and BulkComputeIfAbsent
#86, fixed code sytle, change method name, remove dedundant methods
#86, fix for changes in the value type