Hope the feature improves

[guangx...@gmail.com]

1.About Curve Tool.

Curve tool addition: "Windows XP Microsoft Paint Curve Tool"
Mouse 2 steps to complete the curve（such as the retas curve tool）；

Press left-click to start drawing point A, hover left-click to complete drawing point B, move the mouse to draw the radian, and finally left-click again to complete the radian drawing。

2.About X-Sheet.

addition: OpenToonz 【X-Sheet】 output to 【CSV-Sheet】（such as the retas save as CSV-Sheet），It is convenient to import AdobeAfterEffects，Carry out the 【Anime Effect 撮影】process。