refine list of style synonyms
move db version check to load time
prioritize exact matches over style synonyms
treat subfamily style matches as second-rate
refactor optical size matching
treat subfamily match as exact, but not final match
fix missing local in luaotfload-tool
fix behavior of luaotfload-tool with ttc subfonts
fix font file verification (thanks, Kim!)

the cached lookup did not load the database when verifying
the presence of hashed files.

addresses: https://github.com/lualatex/luaotfload/issues/100
document kpse: and my: lookups
[doc] add note concerning unreliability of font names
add --inspect and --warnings flags to luaotfload-tool
add ascii heading formatter to luaotfload-tool
printer for the names table
add font metadata printer
[doc] describe -I and -w in manpage
add gsub/gpos feature list to --inspect
add counters to info output sections for better legibility
add message about the location of the names db to ``luaotfload-tool --update``

also make log messages more consistent wrt casing
add workaround for globbing of messy paths