Version 0.3.0

- Changed "heavy" weapons to "strength" weapons for consistency. 

- Clarified attacking rules involving strength and finesse weapons.

- Added the master system (finally).

- Added a few basic spells for testing.

- Added the Mage and Cleric starting classes.

- Changed the phrases "short rest" and "long rest" under Power and Resources to "a 10-minute rest" and "a night of sleep" respectively.

- Added the Arcane Knowledge perk.

- Added the Power of Prayer perk.

- Updated the Actions description. 

- Clarified Fatal Blows and HP.

- Fixed a few typos and discrepancies.  //Made a typo here in the changelog.txt file. Oh well.

- Cleaned up the character sheets.