Fix Grip Claw.
Slowpoke can't learn Ice Punch.
Fix Entrainment.

- Wonder Guard can be passed around (!).
Fix Skull Bash and Power Herb.

- Skull Bash gives +1 Defense even with Power Herb.
- Sky Drop is not affected by Power Herb.
Update the item descriptions.
Correct Pursuit fix
Pursuit should no longer activate at regular priority after
getting a full paralysis attacking a switch.
Add 'Evasion Abilities Clause' to CAP.
Merge remote-tracking branch 'upstream/master'