Photo editor delaboratory 0.5 gets an updated UI
Jacek Poplawski released a new version of delaboratory — his new photo editor. This version features a UI overhaul and more changes.
The user interface got quite a bit cleaner (albeit there's always more to desire): color space conversions and adjustment layers are one-click buttons in the right sidebar now. The sample points are not in the left sidebar anymore, they are in a floating palette. But most importantly blending has become much easier to use.
Here is a general introduction to delaboratory as of v0.5:
Among other changes is an updated curves dialog with one-click buttons for curve shape presets:

As well as a new mixer:

Color space conversions have been improved, but sadly there is still no color management support. At least delaboratory will warn you at opening of e.g. a TIFF file with embedded ICC profile.
Highpass filter has been ditched in favour of generic unsharp mask. You can still emulate highpass: use blur and set its blending mode to "add inv".
You can download source code, use a PPA for Ubuntu, and builds for Windows are probably coming. The next thing in plans seems to be zoom support and, possibly, even better sharpening.

Nice video. Dramatic improvements in Delab 0.5 interface over the older versions.
Bravo Jacek!