Start of a parser for command (measurement) files; only lists tokens
Adds grammar rules and supports basic parsing.
Fixes parser so values aren't lost. Returns parsed values in a dict.
Extends number support to decimals, scienctic notation, and signs.
Adds support for comment section at end of file
Extents scientific notation to decimal significands, reworks some keywords
Improve syntax error message, add 'mhz' and 'ghz', clean up and doc code
Turns parser into a class, now called by the main program.
Removes commented-out code in rangemeasure; should be fully working now.
started another module named positionerutils to contain functions.  not sure if it would be best to keep our modules categorically separate of to merge them into either one module or a compiled package.
forgot to add the new file...
Adds testing of returned parser values for unset values.