- Main chnages in the new version:
- declarations for global variables
- for-loop variables are read only
- floats are printed in decimal with enough digits to be read
back correctly.
- more levels for constructors
- table.create
- utf8.offset returns also final position of character
- external strings (that use memory not managed by Lua)
- new functions luaL_openselectedlibs and luaL_makeseed
- major collections done incrementally
- more compact arrays (large arrays use about 60% less memory)
- lua.c loads 'readline' dynamically
- static (fixed) binaries (when loading a binary chunk in
memory, Lua can reuse its original memory in some of the
internal structures)
- dump and undump reuse all strings
- auxiliary buffer reuses buffer when it creates final string
- See the list of incompatibilities with previous versions on
https://www.lua.org/work/doc/manual.html#8
