namark/libsimple_motion

what even is a tween?

namark 6db2dc974a allinclude		преди 10 месеца
source	6db2dc974a allinclude	преди 10 месеца
unit_tests	2dbc37866b Default constructed melody considered empty/done.	преди 4 години
.gitignore	564130634c Initial state extracted from sketchbook.	преди 4 години
COPYRIGHT	e1af1c5cf3 Updated copyright.	преди 11 месеца
LICENSE	23f5334312 copyright license files	преди 4 години
Makefile	564130634c Initial state extracted from sketchbook.	преди 4 години
README.md	564130634c Initial state extracted from sketchbook.	преди 4 години

what even is a tween? shorthand for between?? what even is between???