ZSNES 2.3.6

Changes from 2.3.3 to 2.3.6:

• Fix mouse cursor behavior.
• Improve support for joysticks and gamepads.
• Use miniz instead of zlib, for fewer dependencies when cross-compiling.
• Avoid using malloc+free in zpath.c.
• Add win32, win64 and freebsd_rpi4 as Makefile targets.