Update pannellum.js
Update pannellum.js

Added a JSON config option to stop autorotate after a certain time (counting from when the autorotate started).

The name of the configuration option is `autoRotateStopAfter` and by default is inactive.

That can be useful for when we want the image to autorotate in a interval (between x and y).
quentinyang/pannellum,Benvii/pannellum,riuson/pannellum,riuson/pannellum,riuson/pannellum,ywjrg/pannellum,quentinyang/pannellum,psteph801/psteph801.github.io,ywjrg/pannellum,riuson/pannellum,quentinyang/pannellum,psteph801/psteph801.github.io,mpetroff/pannellum,Benvii/pannellum,quentinyang/pannellum,eric-seekas/pannellum,ywjrg/pannellum,eric-seekas/pannellum,mpetroff/pannellum,Benvii/pannellum,eric-seekas/pannellum,ywjrg/pannellum,psteph801/psteph801.github.io,mpetroff/pannellum,eric-seekas/pannellum,psteph801/psteph801.github.io,mpetroff/pannellum,Benvii/pannellum