1.5.7

• NWN_HOME env var is now the primary variant for userdir detection
• added helper to quickly stand up a ResMan instance that should behave identical to game variant (moved out of shared.nim)
• copied over manifest reader/writer code from nwsync.nim and made it available in neverwinter/nwsync.
• Added a simple ncs disasm (not functional yet)
• gffjson: retcon the strref "id" field of cexolocstr to behave as the game does (where I messed up the nesting, so the lib now needs to follow both data formats)
• gff: be more verbose about duplicate field errors
• Cleaned up some stray debug printing
• Removed all traces of progressbar support - all it managed to do was break terminals

I think mingw amd64 build is still broken. Use with care/use 32bit variant if you run into file/stream issues.