Merge pull request #213 from Yonaba/master

Decimal to Fraction
Added Bogosort implementation for GAP language.
Merge pull request #214 from sebasguts/master

Added Bogosort implementation for GAP language.
Merge pull request #215 from Yonaba/master

Added Weighted random distribution in Lua
2-spaces indentation
Added (Greedy) Best-First Search in Lua