added use of ditaa in documentation
improved documentation of internals
implemented __dup()
fixed copying of pointer references (environment table)
minor changes to documentation
added ditaa generated images
fixed typos
commit ditaa modified html file
fixed initialization of instances created via new(from)
fixed creation of destination directory for lua module link
added rockspeck
added function luacwrap_pushboxedobj() to add boxed structure wrappers
fixed tostring conversion of array/buffer
added set() of arrays via string
moved rockspec to root directory
changed documentation due to luarocks support
added makefile for Windows