Major release post project due date.

• Comments cleanup and shifted to doxygen style.
• Doxygen now used for generating documentation from code comments.
• Added readme.
• Good bit of dead code eliminated.
• Significant optimizations.
• Reduced redundant bounds checking.
• Bugs fixed when reduced redundant bounds checking and added optimizations.
• Added tests to prevent such bugs from appearing in the future.
• Renamed rows and columns to x and y where appropriate for clarity.
• Code style for {}'s now the same everywhere.
• methods which should be made const are now const for proper style.

And ...

• Multithreaded! :D 👍