1.3.0

• Added scoped assignments in while loops.
• OpenBSD-inspired pledge mechanism to declare and restrict permissions.
• Added string.transcode for converting between encodings.
• Added network.fetch, network.tcp, and network.udp.
• Added debug.parse to generate ASTs from Lus code.
• Added worker library for concurrency.
• Backport Lua 5.5 RC3 and stable fixes:
  • lua/lua@8164d09
  • lua/lua@104b0fc
  • lua/lua@3d03ae5
  • lua/lua@a5522f0
  • lua/lua@578ae57
  • lua/lua@632a71b
  • lua/lua@962f444
  • lua/lua@45c7ae5
  • lua/lua@5cfc725
  • lua/lua@2a7cf4f