Should expression text be output as <dynam>?

[th-we]

At the moment, Sibmei exports Expression text as <dynam>. Is that actually sensible? I guess e.g. "dolce" should be an Expression text, but should it be output as <dynam>, or rather as <dir>?

Suggested solutions:

• Export as <dir> and set @class to the style ID from Sibelius (with the leading text.staff. or text.system. stripped). Example for that: text.staff.technique => technique, text.staff.expression => expression.
• Projects should define their own styles or style mappings and use a Sibmei extension or a postprocessing step to get their desired encoding.

[th-we]

This is of course not the whole picture as all the dynamics (forte, piano, ...) are input as Expression. We therefore have to analyize the content to generate <dynam> for those cases.

[rettinghaus]

For now we should leave expressions as they are and just make sure other sorts of texts are actually exported.

[rettinghaus]

Connected to #201