[letterspacing] do not skip first glyph if liga
[extralibs] compensate for missing “resources” field
[letterspacing] skip redundant kerning of ligatures
[db] new structure
[db] document new db layout for rewrite
[db] bump db version number
[db] introduce “local” as third location category
[db] refactor texmf and system font scanning
[db] choose more meaningful identifiers in name extractor
[db] store location (texmf/sys) as string, not bool
[db] refactor timestamp comparison
[db] correctly abort if timestamps match
[db] refactor font info extraction
[db] reorganize mappings record; refactor metadata extraction