Bugs

Windows: If Natron is not installed in Program Files using the installer, Fontconfig does not work properly thus the Text node will not work

Version 2.1.5

Introduce the notion of "Format", which is basically the area of the image to be displayed (similar to the display window in OpenEXR). Each clip has a format attached, so a project can contain images of different sizes.
Fix a bug where deprecated plugins would not be loaded from project file 2561778
macOS: clicking the dock icon now raises all windows
macOS: fix ColorLookUp curves parameter display
PyPlug: fix a bug where removing a node inside a Group would break any expression on its siblings
Reader: fix a bug where copy/pasting a node would display a "Bad Image Format" error
The whole user interface now uses the same font, and dialogs were cleaned up to use standard buttons
Roto: fix a bug where the selected tool in the viewer would not refresh properly
Fix a bug where Natron would not work properly when installed in a directory containing unicode characters
OpenEXR: fix a bug where auto-crop files would not have their origin placed correctly

Crop: add the "Extent" choice, to chose either a predefined format or a custom size
Blur: add the "Crop To Format" option.
Reformat: if input has a format, use it to compute the reformated output.
NoOp: can also set the format.
Shuffle: re-enable the "Output Components" choice"
Premult/UnPremult: don't try to check processed channel when rewiring the input
(beta feature) ErodeBlur: Erode or dilate a mask by smoothing.
(beta feature) KeyMix: Copies A to B only where Mask is non-zero.
(beta feature) PIK: A per-pixel color difference keyer that uses a mix operation instead of a max operation to combine the non-backing screen channels.
(beta feature) PIKColor: Generate a clean plate from each frame for keying with PIK.
(beta feature) Sharpen & Soften: new plugins.
(beta featur) EdgeExtend: Fill a matte (i.e. a non-opaque color image with an alpha channel) by extending the edges of the matte.