Setters may not be void. Closes #67
Merge pull request #68 from garcia-jj/ot-settersnonvoid

Setters may not be void. Closes #67
Changing some IllegalArgumentException to MirrorException because
validates logic, not arguments
Adding missing test class
Merge pull request #69 from garcia-jj/ot-fixingexceptions

Changing some IllegalArgumentException to MirrorException
fixing failing tests and skipping performance tests
removing tubaina from build. Docs will be migrated to a jekyll site.
removing useless files
Adding a class to validate arguments
Changing some IllegalArgumentExceptions to MirrorException
Fixing charset author name
Merge pull request #70 from garcia-jj/ot-preconditions

Adding a class to validate arguments
Using Java Arrays.equals to check content equality
Improving collections performance adding one element per time instead of
creating a new collection before elements copy.
Improving getter list
Merge pull request #71 from garcia-jj/ot-arraysequality

Using Java Arrays.equals to check content equality
Merge pull request #72 from garcia-jj/ot-collectionssmallimprovement

Improving collections performance adding one element per time instead of creating a new collection before elements copy