QoL Changes (no rule or ability changes)

I have made the following quality-of-life changes based on feedback:

• Black & white primary illustrations to save on colored ink and provide more detail
• Knowstone Log to record number of collected Knowstones each run
• Check symbol next to ability cost for Abilities that have a Feat/prerequisite Ability requirement
• Updated back panel descriptions for Knowstone Log and check symbols
• Active "Discard this token to..." wording for Active Abilities

No Abilities, their costs, or rules were changed, but a few of the Feats were removed to make space for the Knowstone Log.