v1.6.0-rc63 - Add basic support for rounding corners

• Add basic support for rounding corners. Per-quadrant and circle rounding is not supported yet. Anti-aliasing is not supported yet
• This also updates the CI process so binaries are built against Ubuntu 18.04 instead of 16.04.

v1.5.8-rc62 Fixes #582

• Fixes #582 - Corrupted jpegs are now handled gracefully.

v1.5.7-rc61

• Optimize PNG and WebP filesize when converting from WebP by decoding without alpha when appropriate
• Fix compositing when the canvas is a decoded PNG (Fixes #580)

v1.5.6-rc60

Fix integration tests for imageflow_server to actually check status c…

v1.5.5-rc59 - New OS X NuGet packages require macOS 10.15 or higher

We have replaced Imageflow.NativeRuntime.osx_10_11-x86_64 with Imageflow.NativeRuntime.osx-x86_64 and Imageflow.NativeTool.osx_10_11-x86_64 with Imageflow.NativeTool.osx-x86_64 and deprecated the older packages.

The new packages require macOS 10.15 or higher to run.

v1.5.4-rc58

• Fix trim.threshold command string - was causing ContentDependent LayoutError

v1.5.3-rc57 - Use white background when converting from PNG32 to Jpeg

• Make LibPngEncoder{matte} work finally
• Optimize png size when applying opaque matte color
• Default to white background when converting PNG32 to jpeg
• Add matte support to LibjpegTurbo and MozJpeg encoder presets. Fixes #417
• Make Constraint.canvas_color override hints.background_color when set.

v1.5.2-rc56 - include decoded image dimensions with job result

• job_result and build_result JSON nodes now include a "decodes" entry next to the "encodes" entry, with the same schema
• v1/get_version_info now includes git_tag and git_describe_always entries. git_tag is optional.

Note: this release is the same as 1.5.1, but due to deployment issues 1.5.1 was not fully released.

v1.5.1-rc55 - include decoded image dimensions with job result

• job_result and build_result JSON nodes now include a "decodes" entry next to the "encodes" entry, with the same schema
• v1/get_version_info now includes git_tag and git_describe_always entries. git_tag is optional.

v1.5.0-rc54 - Breaking change - Image rotation is now clockwise

• Fix image rotation (Nodes rotate_90 and rotate_270) and "rotate=x" and "srotate=x" to be clockwise instead of counterclockwise.
• Add "watermark_red_dot" JSON node and querystring command to support license enforcement in Imageflow .NET Server.