libvips / nip2

Merge branch 'master' of github.com:libvips/nip2 into fix-marshal-types

add 8.6 compat and mitchell

add 8.6 compat and mitchell

more -V output
and some small cleanups

bump version in docs

bump version in docs

better compat handling
we could produce spurious compat warnings before

fix up .desktop file
and add an icon

oop, forgot the micro v number
configure.ac didn't set micro

v 8.2.1