Main changes
- new generational mode for garbage collection
- to-be-closed variables
- const variables
- userdata can have multiple user values
- new implementation for math.random
- warning system
- debug information about function arguments and returns
- new semantics for the integer 'for' loop
- optional 'init' argument to 'string.gmatch'
- new functions 'lua_resetthread' and 'coroutine.close'
- coersions string-to-number moved to the string library
- allocation function allowed to fail when shrinking a memory block
- new format '%p' in 'string.format'
- utf8 library accepts codepoints up to 2^31
- new generational mode for garbage collection
- to-be-closed variables
- const variables
- userdata can have multiple user values
- new implementation for math.random
- warning system
- debug information about function arguments and returns
- new semantics for the integer 'for' loop
- optional 'init' argument to 'string.gmatch'
- new functions 'lua_resetthread' and 'coroutine.close'
- coersions string-to-number moved to the string library
- allocation function allowed to fail when shrinking a memory block
- new format '%p' in 'string.format'
- utf8 library accepts codepoints up to 2^31