Command feature: archive mode

[lichendust]

A flag for the merge command called --archive, which would expand and bake all syntax features into the text:

• includes
• scene numbers
• counters

It would also sanitise Meander of any other Meander-flavoured syntaxes, such as wrapping header: updates in note syntax to obfuscate them. It's essentially a command modifier that "un-Meanderises" any document, suitable for importing into Final Draft or simply archiving the file long-term at the end of a production.

Current limitation: the parser kinda sucks and is desctructive, so it makes writing this kind of feature require a lot of duplicated logic and code. A proper tokenising parser that can bi-directionally reconstruct all of the original text would enable this feature handily and fix a bunch of edge programming that's currently in other parts of Meander right now.