LazPaint 7.1.6 + Portable

Debian: various icon sizes for Linux application menu
Debian: compatibility with debuild (to release in Debian distributions)
MacOS: retina scaling of button glyphs
MacOS: fix online requests (version check)
clipboard: supports paste from redirected URL and HTML inline data
color chooser: window switches to available fill options
color chooser: copy/paste color definition
language: add Polish translation
interface: add support for Qt5
interface: repaint on theme change
interface: detect system dark theme
interface: scale top toolbar, more icon sizes
interface: larger textboxes in image browser, Escape to close
interface: vertical splitter to resize docked controls / image view
layers: add HSL and corrected HSL blend modes
layers: add context menu for layer
layers: export layer (in context menu)
image: add 180-degree rotation
SVG: read/write layered SVG (interoperates with Inkscape)
SVG: exports vectorial layers to SVG
SVG: fix scaling, better support for text
OpenRaster: support for SVG layers (interoperates with MyPaint)

A new version of LazPaint is at last available. It has vector shapes, though gradients within shapes are not supported yet. Apart from that, you can edit shapes after they are drawn, move them over/under other shapes within the layer, etc.
 
When editing a shape, there are control points. Pressing SHIFT or ALT will give you alternative effect of those points. In particular, with ALT, corner points allow to rotate and resize, and side points allow to shear, i.e. move one axis relative to the other one to draw a parallelogram.

If that's not enough, you can transform a shape into a curve, and then add or remove points. The key Delete will delete the point you are hovering and the keys Insert or I will insert a new point at mouse location.

Support for ICO, GIF and TIFF has been improved. It is possible to edit/add/remove frames within those files. Also TIFF support a wider variety of pixel formats.

A dark theme is available, in case you work at night or just like it darker. The workspace color can be defined.