Changes since last release

Added microui
Added LuaSocket
Added spry.arg callback to read command line arguments from Lua
require function now looks for modules in package.loaded and package.preload
Font text can now be wrapped by width
Several small API additions:
- spry.program_path: path to the executable
- spry.scissor_rect: limit drawing in a rectangle
- find: find key in table
- aabb_overlap: check if AABB overlaps another
- rect_overlap: check if rectangle overlaps another
Shutdown function used to wait for the next hot reload. It now immediately stops the hot reload thread
Removed utest

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