Ver. 1.3
[New] Width and opacity of an eraser tool can be specified isolated from pen tools.
[New] Default tools (including pen width and color) for new Paper can be specified. (Menu > more... > global settings > New Paper settings)
(Next update) Text input / Image saving on saving file / faster response / fix some crashes / and so on

Next release takes a few month because the repair is large.
Please wait patiently.