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no more double applications for source-locs; always use (current-continuation-marks)
mark applications and function boundaries
add a function component to all runtime values
string-map library for js maps
update bb for string-map
update all for string-map
*make-*string-map
Merge branch 'master' of github.com:brownplt/pyret-lang
this was ignored by git
check option
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updating whalesong
Merge branch 'master' of github.com:brownplt/pyret-lang
.
add codemirror to make dep
make codemirror use https
Merge pull request #43 from kmicklas/master

Clean up lexer a bit
AST ffi, and provie *

AST ffi provides Pyret data definitions (in ast.arr), and one API entry point,
ast.parse.

parse :: String * String * {check: Bool} -> { pre-desugar: AST, post-desugar: AST}

The first argument is the string to parse, the second is a label for the nodes
(e.g. a path) and the third is a (designed to be extensible) options object for
specifying parsing modes --- here check mode or not.  It provides both the pre-
and post- desugar parses of the string.

Also in this commit is `provide *`, which is implemented via desugaring to:

provide {
  name: name
  ...
} end

For each name that is in a toplevel s-fun, s-let, or s-data declaration, and
also the corresponding is-* and variant name bindings for data.
better examples