Remove unused tone parameter from EffectsBlit
Don't track state which isn't stored in the effects bitmap (zoom, rotation)
Refactor EffectsBlit
Add opacity handling to TransformBlit
Add scale handling to WaverBlit
Change EffectsBlit methods to take origin position
Remove unused Bitmap::Resample method
Merge pull request #376 from glynnc/master

Refactor EffectsBlit
ShowPicture/MovePicture fixes
Change waver parameters to more closely match RPG_RT
Merge pull request #377 from glynnc/master

Picture fixes
Rename effect_speed/effect2_speed to current_effect/finish_effect
Merge pull request #378 from glynnc/master

Rename effect_speed/effect2_speed to current_effect/finish_effect
Picture fixes
Don't replicate 2k MovePicture "bug" in 2k3 mode
Don't reset rotation angle or waver phase when changing speed/depth
Merge pull request #379 from glynnc/master

Picture fixes
Avoid Game_Interpreter::Setup side effects when loading from save
Fix enemy HP trigger for battle events
Count equiped items as held items
Let parallel interpreters run with visible messages

Parallel interpreters ignore other interpreters' messages and will keep
on running. They only stop when they are the "owner" of the displayed
message. The main interpreter is more polite and stops at any message.
Refresh map after the debug scene if there have been changes