v0.20.2 - 28th April 2018

• Add tint operation to set image chroma. #825 @rikh42

• Add environment variable to ignore globally-installed libvips. #1165 @oncletom

• Add support for page selection with multi-page input (GIF/TIFF). #1204 @woolite64

• Add support for Group4 (CCITTFAX4) compression with TIFF output. #1208 @woolite64