Switch session by left/right swipe

[asavonic]

Added gesture detection for horizontal swipe. Swipe right would switch session forward, swipe left to switch backward.

Feature request #48.

Tested on Android 5.0.

[Grimler91]

Tested on 8.0, rebased against master, seems to work :+1:

[asavonic]

I've been using this for a year, and found one issue: when selecting a text, a cursor move can be interpreted as a swipe. This should be easy to fix (check if we are in selection mode, and disable swipe detection), but this was not on top of my list due to lack of interest for this PR from the maintainer.

[viktorprogger]

Is it still alive?

[finagolfin]

@asavonic, if you make the swipe fix, I will help you get this in, as I think it's a worthwhile feature addition.

[dheera]

Ping -- much wanted feature

[Cypher1]

@asavonic Any chance the swipe fix could be implemented? Even just having a fling to change session would be a huge usability improvement for me.

[asavonic]

Let me check if I can still build the project.

[lytedev]

Any luck? 😁