Liblouis table for Danish

[bertfrees]

• include some official braille code specification document (Danish specifications and guidelines #7)
• write tests based on the specification
• validate the existing braille table for Danish
• improve the existing table or write a new one from scratch

[bertfrees]

Braille tables exist for "g16", "g26", "g18" and "g28" (@BueVest's naming scheme, e.g. "g16" means "grade 1, 6 dots"). @stesk I understand you are only interested in 6 dots (g16 and g18). Do you also need partial grade 2? There is no table and test data for that yet.

[bertfrees]

For improving the existing table, my hope is that Bue and Nota will be able to work together in the future. Amongst other things this means they should ideally use the same tools. I'm currently trying to integrate Bue's tools into the liblouis project.

[stesk]

@bertfrees Yes, partial grade 2 is essential.