fixes #27
rename tests
rename test methods
with example
javadoc.. I was tired...
move functions to Comparables
reuse functions
fixes #26, add doesNotContainAnyElementsOf
fixes #17
Fix date format related issues

Synchronization/instance sharing, typos
Fix more findbugs warnings
Fix more findbugs warnings
Merge pull request #53 from twillouer/issue27

fixes #27
Merge pull request #54 from twillouer/issue26

fixes #26, add doesNotContainAnyElementsOf
optimize for ref #14
@Ignore
Fixes #26 - minor improvements
Merge pull request #62 from twillouer/issue14

Issue14
Fixes #14 - improve doesNotHaveDuplicates performance when a custom comparison strategy is used
refactoring : remove Embedded class that was actually not needed and avoid the algorithm duplication
Fixes #14 : minor refactoring