GOQL: Should quotes be optional for strings starting with numbers?

[clarisma]

Currently, the Query Parser requires strings that start with numbers to be quoted.
Relaxing this requirement would avoid issues on shells (in particular on Windows) that "eat" double quotes (clarisma/geodesk-gol#20).

Strings that also contain whitespace or punctuation would still require quotes. So 4wd or 888abc could be unquoted, but 37 Flavors would continue to require quotes.