AcademySoftwareFoundation/OpenImageIO Release-2.0.6 on GitHub

Release 2.0.6 (1 Mar, 2019) -- compared to 2.0.5

PNG: more careful catching of errors and corrupt png files. #2167
PSD: read now properly extracts layer/subimage name and data window offset
coordinates. #2170
ImageBuf: Fix bug in propagating unassociated alpha behavior request. #2172
oiiotool -o:all=1 fix crash when outputting 0x0 subimages. #2171
Developer goodies: simd.h ops for vec4 * mat44 multiplication. #2165
Developer goodies: Strutil::excise_string_after_head() #2173
Fix crashes on Windows from certain regex replacement happening as part
of MakeTexture (internally avoid MSVS implementation of std::regex). #2173