* Fixed reset function to reset placeholder variables as well

* Added functionality to display best policy

* Added GridMDP editor to create and solve grid-world problems

* Added reference to grid_mdp.py in mdp.ipynb

* Replacing %psource with psource function

* Print matrix to console as well

* Added dropdown option to solve using genetic algorithm

* Added option to solve using Hill Climbing

* Added messagebox to confirm exit

* Added explanation of Genetic Algorithm functions using an example

* Added GUI version of genetic algorithm example (phrase generation problem)

Add features like selecting cities to be part of tsp, controlling temperature and speed of
animation.

* Added Vacuum Agent

* Minor Fix

* Improved Font

* Added XYVacuumEnv

* Minor Fix

* Review changes

* tic-tac-toe gui added

* Added GUI for Searching

* Added Legend and Minor Fix

* Minor Fix and Options added

* Added Breadth-First Tree Search

* Added Depth-First Tree Search

* Minor Fix

* Added Depth-First Graph Search

* Minor Fix

* Breadth-First Search and Minor Fix

* Added Depth-First Graph Search in notebook

* Added Depth-First Tree Search in notebook

* Cell Placement

* Added Uniform Cost Search in GUI

* tic-tac-toe gui added

* Added GUI for Searching

* Added Legend and Minor Fix

* Minor Fix and Options added

* Added Breadth-First Tree Search

* Added Depth-First Tree Search

* Minor Fix

* Added Depth-First Graph Search

* Minor Fix

* Breadth-First Search and Minor Fix

* Added Depth-First Graph Search in notebook

* Added Depth-First Tree Search in notebook

* Cell Placement

* tic-tac-toe gui added

* Added GUI for Searching

* Added Legend and Minor Fix

* Minor Fix and Options added

* Added Breadth-First Tree Search

* Added Depth-First Tree Search

* Minor Fix

* Added Depth-First Graph Search