return primitives directly when parsing
add functions to determine size of quotation resulting from accumulator
on stack

also rename _qstacksize -> _wordsize
add ] as pseudo-word to pass scan-datum
quotation reading with [ ] works with new parser
fixed number compilation, nested quotations confirmed working!
rename dictentry accesor  _word>> to _quot>>
fix colon compiler for new parser
cleanup old reader stuff
fix '\'
add 'unless'
make listener compatible to new parser

quite wasteful when handling parsing words at the moment, also explicit
find is slower as compiled-in find used earlier
cleanup

remove starts-with? and other old primitives, also remove find
implementation from stdlib
reactivate internal find
fix ruby reader regarding some word boundaries with quotations