Release Pineapple Picture 0.2.2

Pre-release for 1.0

Supported platforms:

• Linux/X11 with at least Qt 5.10 provided.
• Windows

Only Windows pre-build binary provided. Feel free to build from source code and use, macOS is possibility also works without issue but it's not supported at all.

Changelog:

0.2.1 - 0.2.2:

• When drag and drop an image file, also try load gallery from the file location folder.
• Add previous and next button to GUI, works the same way as pressing PageUp and PageDown.

Get it:

• Windows binary: see following Assets.
• Arch AUR: pineapple-pictures-git (only -git version for now).