v0.3.4

Runtime changes

• Use DxLib's matrix for scaling and translation in order to adjust view for Spine older than 3.6 where there is no built-in scaler.
• Allow adding drawables later to render multiple files which are not in the same directory.
• Rename a few functions.

Viewer changes

• Add a menu item Image-> Add effect to add Spine as an effect.
  • Of course, the effect is required to have the same animation name and appropriate timelines.

Effect demonstration

Add.effect.mp4