Finish Release-0.5
Added the DotArr class with some basic operations.
Added the DotArr::delete() function to unset values.
Added a test for DotArr::get() fucntion.
Missing commit for the modified TestCase base class to allow for testing non-public properties.
Added the DotArr::keyExists() function.
Added the Arr class to instantiate dot-notated array objects.
Added the DotArr::convert() function and use it in the Arr::__construct() function to ensure we have a dot-notated array if an initial data array is given.
Retry the branch aliases. They must be commited to master, so we need to wait to the next realease to see some changes.
Adjust a ternary comparison.
Renamed the mb_str_replace internal functions to conform to PSR-2 and changed their visibility to private.
Increased the test coverage to almost 100% (due to environment-dependant functions regarding mb_* functions fallbcks 100% is not achievable).
Added missing docblocks.
Removed TODO comment.

Using a function like in_array() or array_search() would be more cumbersome and inefficient because the way it is now we can break the cycle whenever we find a match and return the index if need be.
Added basic numeric operations to the num class.
Fixed some misspelled test function names.
Changed the mod() function to return float and use fmod() function instead of the modulus operator % which only works as intended for integers (the result is casted into an integer).
Added type specific basic numeric operations.
Specify a warning in the class docblock about strict-typed functions for numeric classes.
Fixed license inline docblock tag.