GitLab

added safefail check to btn call, fixed layer behavior in map function which should check if flag is contained, not equal

created sdl_impl.h and sdl_impl12.h to manage SDL1.2 implementation of graphics function trying to alter less code as possible

fixed 5th and 6th optional parameter to map(..) which should fill screen with tile map (fix Chrysopoeia)

This should fix substring operations on certain titles.

removed SDL_Image: font texture on SDL backend in generated from raw data. PNG cartridges are now loaded with picopng library.

Changes:

* api: add() and del() compat fixes
* add() returns the value being added if subject is not nil
* del() returns the value removed, if found in the table
(implies subject is not nil)
* api: atan2 returns are [0,1[ instead of ]-π,π]
* api: atan2 returns are offset by -1/4 circle
* atan2(0,0) = 0.75
* function behavior now matches pico8 on wiki example code

Build fixed for compilation on Clang, changed CMakeLists to allow optional OpenDingux compilation.

* libretro: fixes long long detection from failing
* CMake: optionally use opendingux toolchain
* Fix implicit declaration error
* Fix narrowing error from int to size_t
* fix return types for lua extension funcs
* std::bit_not requires C++14 but is usually present on gcc
* Avoid narrowing conversions in initialization

Add Makefile for libretro backend

fixed coresume return value, added binary decimal literals (working but not complete), allowed mid with 2 arguments