v0.3.1: Read File Optimizations - mmap

AssetKit now provides an option to read files with mmap (Windows also supported). This options is enabled as default. To disable mmap

ak_opt_set(AK_OPT_USE_MMAP, false);

New Features:

• New Option: AK_OPT_USE_MMAP boolean, default is true.
• Expose mmap api to usable externally
• mmap-ed memories can be attached to a memory node, unmap will be called before memory node is free-ed
  • ak_mmap_rdonly(int fd, size_t size) - map file as READONLY
  • ak_unmap(void *file, size_t size)- unmap file
  • ak_mmap_attach(void *obj, void *mapped, size_t sized) - attach mmap to memory to unmap automatically
  • ak_unmmap_attached(void *obj) - unmap all attached mmap files

Bugfixes and Improvements:

• fix ak_strtok_count_fast for READONLY memory
• util: remove modes from ak_readfile and make it "rb" globally
• dae: fix writing READONLY memory
• memory: fix URL memory extension
• some other improvements