issue #72 - cache expiration
Merge pull request #140 from timeck/issue-72

issue #72 - cache expiration
extra key/value type checks in compute() and bulkCompute() methods
Merge pull request #141 from timeck/someExtraChecks

extra key/value type checks in compute() and bulkCompute() methods
Issue #143 Fixing Ehcache.putIfAbsent to return previous value
Issue #143 Actually track the installement
Merge pull request #144 from alexsnaps/issue-143

Issue #143 Fixing Ehcache.putIfAbsent to return previous value
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
#86, fixed findbug issues
#86, fixed tests to reflect the bulkCompute javadoc
#86, fixes after rebase