Pyblindopt

Fix regression error on the new init method.

Added a new init method, named round_init.
This method executes n rounds of random population generation, then uses a heuristic to select the best candidates (based on fitness) while maintaining a high distance among themselves.

Added EGWO

Fix issue with solutions bounds with GWO.

Added GWO as a method.

**Full Changelog**: https://github.com/mariolpantunes/pyBlindOpt/commits/0.1.2