[Change] finished help

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>
[Fix] Dim and in block pre-allocations if input are 'matrices';

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>
[Add] Memory comparison ismember vs ismemberb

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>