Adding a zeroOrMore and a oneOrMore Parser function
A spaces parser
The working "ident" function
First pass on the SExpr parser, just an int in parens
A parser that deals with Ints or Idents, and puts them in an Atom
Parsing and removing spaces from around an Atom
Causing the parser to recur for nested SExprs!
More work to the parser, now parsing the outer parens successfully
Finishing the basic SExpr parser