Use correct package in AndroidManifest.xml

Used %PACKAGE% in manifest package
Hold shift to not snap slider.
Preserve selection when setting new items, if possible.
Better parameter name.
Avoid drawing when the clipped area is <= 0.

ScissorStack adjusts the rect to be valid if width or height is negative.
reverting test code so TexturePacker works via main
Merge pull request #1405 from Flet/texturepacker

reverting test code so TexturePacker works via main
Fixed square output.

closes #1404
Merge pull request #1401 from jampot5000/patch-1

Use correct package in AndroidManifest.xml