Started work on lexer/parser for MWEL (MWorks Experiment Language)
Fixed start symbol specification in MWEL parser.  Added MWEL example.
Fixed order of productions in print_grammar() output
Report column number (instead of lexpos) in error messages
Added component replication syntax
Allow empty arg list in function-call-style component definition
Started work on another MWEL example.  Tweaked lexer error message formatting.
More work on new MWEL example
Reworked component definition statements into extended-syntax function calls and assignment
Optional alphanumeric suffix on number literals is now called "tag" (instead of "unit")
Support MATLAB-style range expressions in list literals (MWEL only)
Updated rsvp.mwel
More work on experiment1.mwel
Tweaked print_grammar.  Renamed spec.txt to jel.md.
Added mwel.md
Renamed some types and keywords to bring them more in line with JSON/JavaScript:

list -> array
dictionary -> object
"def" -> "function"
Added support for function definition expressions.  Tweaked print_grammar.
Added function argument lists and return statements
Updated and improved jel.md
Added chained and augmented assignment.  More work on experiment1.mwel.