Animatrix

Animated changing matrix. Rows and columns can be added, removed, and replaced with transitions.
While removing rows/columns with a transition nothing else can be changed: see #47
To make the matrix be permutable (other matrices can use PermutedMatrix because they do not alter the number of rows/columns) some tricky (and fast) algorithms are added to ArrayUtil.
For big matrices the drawing time is sped up immensely because of better visibility testing for matrices and titles.