New Features

Full WebP support in both Content Management (including media library uploads) and Content Delivery (on-the-fly conversions of png, gif and jpeg to WebP)
Allow path exclusion based on wildcards (#37)
Added https://pngquant.org optimizer support
Update SVGO to 1.3.2 (#57)
Changed SVGO to use a packaged compiled version SVGOP to make it easier to deploy
Update MozJpeg to 3.3.1
Change default jpeg optimizer to lossy MozJpeg due to its superior performance
Add SXA compatible Media Request Handler
Changed to SDK csproj format to support multiple TargetFrameworks

Fixes

Scaling WebP images fail in synchronous mode (#53)
Incorrectly serving WebP when handling multiple requests at same time (#51)
Error only in Chrome: Cannot access a closed Stream (#50)
WebP issues (#49 )
The "PackageRetrievalTask" task failed unexpectedly with version 4.0.0 question (#47)
Fix an issue with PngQuantOptimizer related to #34
Fix temp file issue for png (#52)
Fix an issue with streams being disposed when Dianoga was unable to optimize them (#56)
Fixed WebP CDN support (#61)
Fixed SVG support on Azure PaaS (#46)

Configs - defaults have changed
SVGO has been split to a separate Dianoga.svgtools. Please see the readme for details if you are using SVGO.
Removed old nQuant.net as it is no longer maintained and is superseded by pngQuant

Changed SVGO to use a packaged compiled version (SVGOP) to make it easier to deploy
Fixed SVG support on Azure PaaS (#46)
Optimization with the Process runner to dispose it properly.