- Add support loading custom palettes (restored from upstream)
- Add composite palette, switchable as a core option to select default
rgb colors or composite (experimental)
In order to accomodiate the feature, colormap or LUT is used instead of
usin MAKECOLOR_PCE.
https://github.com/libretro/beetle-pce-libretro/issues/6
- Button now reacts immediately as soon as pressed instead of waiting for turbo counter to reach specified turbo frame delay
- Fix some rare cases where games wont respond to button presses when turbo is enabled on that button - some games require a button to be pressed for about 2 frames before game reacts like attack or jump (Dragon Spirit).
This changes turbo logic so that it holds the button for 2 frames instead of the usual 1 frame before turning button off and wait for the next cycle.
- Make turbo delay core option variable from 1-15
- These turbo-related core options are not working correctly and redundant because there is already a dedicated button
to enable turbo buttons. These core options also resets turbo states each time a core option is modified.
Removing it since it unneeded.
