make metaMDSrotate defunct
remove getNumObs (depraceted/defunct from 2.0-0)
add alias to metaMDSrotate (missed in a40f06498a)
remove permuted.index2 (defunct/deprecated for long
deprecate commsimulator
edit NAMESPACE for deprecated & defunct functions

This is a potential source of merge conflicts, because some other
new things can also touch NAMESPACE (ordiconsensus comes first to
my mind).
Merge pull request #30 from jarioksa/deprecated-defunct

Deprecated defunct