1.0.0-beta.4

Breaking

• add/remove-specials and add/remove-repr are now set/unset
• rename wrong gdc to correct gcd

Features

• doc strings on variables
• persistent history in executable REPL
• repr of promises (from delay function)
• allow set! with doted JS notation
• new functions gensym? and prototype?

Bugfix

• fix Environment::has (ref) on variable that are undefined
• fix macroexpand with pprint on syntax macros
• fix formatter breaking rules definition in LIPS + (+ fix cond)
• fix rational? on integers (bigint)
• fix parsing quoted atoms (e.g. '#f, '#\x or '#xA)
• fix parsing escape slash inside strings
• don't throw exception on parse error in string->number (return false)
• fix silent accepting two big code point #\xFFFFFF
• fix custom repr of instances created by define-class
• fix parsing R7RS hex literals in strings
• fix syntax-rules with (a b ...) that match single item
• fix swallowed undefined from (cons 1 undefined)
• fix identifiers in syntax-rules
• fix byte vectors
• make print and pprint always call newline
• fix escape ellipsis from R7RS
• fix unboxing values (seen with stack overflow on dir date object)