Add flip function in animation file parser

[goldarte]

Think about how to implement flip in Blender and blender-csv-animation addon, and about time synchronization of flips

[artem30801]

Suggesting usage of blender custom properties and thier keyframe animation. So period of time when flip should be preformed is marked with flip=1 custom prop. That also will be good approach in terms of syncronization (at least, start and end of flip times ) Example on screenshot: https://1drv.ms/u/s!Aly3J8z0pNMh1nzdepuM8u1_3KBC

[goldarte]

This is a good suggestion, but we need to think about end time of the flip. Flip has a constant time of execution, so after making flip copter should hover in start point of flip before the end time, do I understand it right? How can the user know about minimum flip time?

[artem30801]

Maybe we should consider about moving blender addon to this repo