Changes in the luatexbase package/bundle

Summary of backwards-incompatible interface changes between 0.1 and 0.2:
    - Lua objects are now in table luatexbase, not luatextra.
    - Lua tables tex.attributenumber and tex.catcodetablenumber are not
      created any more, use their couterparts in luatexbase.
    - \luatexsetcatcoderange has been renamed to \setcatcoderange.
    - luamcallbacks has been renamed; Lua objects are now in luatexbase,
      no more in callback.* or luamcallbacks.*
    - module error/warning etc now apply string.format to the arguments.

2010/05/12 v0.2
    all
        - use luatexbase as the Lua module name
        - change the filename of the lua module (suppress luatexbase.)
        - load luatexbase-compat
    luatexbase-compat
        - new
    luatexbase-attr
        - don't create tex.attributenumber
        - load luatexbase-compat
    luatexbase-cctb
        - don't create tex.catcodetablenumber
        - rename \luatexsetcatcoderange to \setcatcoderange
        - load lua-compat
    luamcallbacks -> luatexbase-mcb
        - rename package, new version numbering starting at 0.2
        - functions are now in luatexbase rather than luamcallbacks, they
          are no more copied to callbacks either
        - lua objects are now local (except for the public interface)
        - test file now for plain and latex
    luatexbase-loader
        - require"foo.bar" now looks for foo/bar then foo.bar, see doc for
          details
        - better cooperation with the original package loader
        - works with luatex 0.25.4
    luatexbase-modutils
        - module error/warning etc now apply string.format to the arguments.
        - use error() instead of \errmessage.

2010/03/28
    luatexbase-*
        - add catcode defenses

2010/03/27
    luatexbase-loader 0.1
        - add very minimal test files for luatex and lualatex
    luatexbase-modutils 0.1
        - add minimal test files for luatex and lualatex
        - use require() (with luatexbase-loader) for loading
    luatexbase-attr, luatexbase-cctb, luamcallbacks (test file)
        - use luatexbase-loader

2010/03/26
    luatexbase-cctb 0.1
        - add minimal test files for luatex and lualatex
        - fix allocation range (1->65535)
        - make sure newly allocated tables are initialised
        - fix sensitivity to the current value of \escapechar
        - new macro \setluatexcatcodetable

2010/03/11
    luatexbase-attrs 0.1
        - add minimal test files for luatex and lualatex
        - make sure newly allocated attributes are unset
        - fix sensitivity to the current value of \escapechar

2010/01/21
    luatexbase-regs 0.1
        - add test files for luatex and lualatex
        - extend registers with Plain-based format too
        - fix \box and \marks allocation (\mathchardef -> \chardef)
        - fix \*blk macros (\mathchardef -> \chardef)

Version 0 of the bundle is part of the 2010/01/12 version of luatextra.