Snips with non-linear animation

[angelwire]

Feature request on Twitter via last_life_left:

have non linear animation (ie frame 1 > 2 > 17 > 13)

Notes:Can be achieved by creating a 1 frame Snip with each successor as a frame, or by using loops with -1 repeat values, but the first method is cumbersome to use and the second method only works with frames that are sequential (1>2>13>17 not the 1>2>17>13 in the example)

[LastLifeLeft]

Please, note that this is more of an edge case than the other two request. With Ping Pong and Reverse you are already covering most of the usual sprite animation formats.

[angelwire]

It's been a while but I just wanted to post a quick update regarding nonlinear Snips. I re-opened this because I thought I found a way to implement it without overhauling the entire system, but I hopped back into the project today and found out I was wrong. I'll leave this issue open in case there ends up being a huge demand for nonlinear Snips or there's a better workaround. But I won't be working on implementing it.