Consistently use bincode's Encode/Decode to avoid issues with
incompatible serde features. Support for storing some temporary files as
JSON is removed.
The size of the "processed" directory is reduced by ~8% with the new
default encoding of bincode 2. Performance is more or less unaffected.
- Fix text colors for signs modified using dye
- Fix text colors specified using `#rrggbb` CSS syntax in JSON text
Only named colors specified via JSON text were working as intended. Dyed signs use different
color names.
The mapping of color names to values is now handled by the generator. Both the generator and the
viewer must be updated for sign text colors to work.