A lang-extension that overrides the ', `, etc. abbreviations for quote, quasiquote, etc, and
provides hygienic versions instead.
documentation: http://pkg-build.racket-lang.org/doc/hygienic-quote/index.html
Even if you re-define quote somewhere in your program (either accidentally or on
purpose), '3 will use the quote from racket/base, not your definition. The same is true
for ` as quasiquote, , as unquote, ,@ as unquote-splicing, #' as syntax, #` as
quasisyntax, #, as unsyntax, and #,@ as unsyntax-splicing.
#lang hygienic-quote racket
(define (quote x) 5)
'3 ; still 3