[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
[db] include information about conflicting file names in record
[db] cleanup: use more consistent identifiers
[db] adapt sanitization routines
[db] extend name extraction on fontloader.info()
[db] refactor fontname extraction
[db] add post-build statistics
[db] adapt function reload_db to new db structure
[db] fix integer format string
[db] intercept possible division by zero