Support for empty chunks in a chain of ChunkTBC's
Get rid of usages of wrapTBC and unwrapTBC

We don't need them anymore after the last change
Bug fix in parsing negative floating-point numbers
More namespacing and clean-up of basic chunk types
"whitespace" and "literal" chunks
Extract a header file
The star operation
Scientific notation for floating-point numbers; one_in_sequence()
either() for a list of alternatives; follow() to easily generate a sequence of chunks
Parameterless garbage() function
Use immutable list from grogers0; Parser as a separate class

Having Parser as a separate class lets you track progress