Improve RunVariations in testfns.apln

[sloorush]

RunVariations in testfns.apln is better now needs a lot of improvement.

List of tasks:

new variations needs more tests of:

• lengths of arrays from 1 to 10000

kind:

• scalar
• vector
• tall matrix, 11-column matrix with 10*0 1 2 4 rows
• wide matrix, 11-row matrix with 10*0 1 2 4 columns
• square matrix with ⌈10*0 1 2 4×0.6 (1 4 16 252) rows/columns

Try to standardize the RunVariations for:

• unique
• uniquemask
• indexof
• membership

Wrap up the random number generate by adding:

• complex numbers
• characters
• floating points with actual decimals