is_local_maximum() is a wrapper function for peak_local_max()
is_local_maximum() runs much faster (~20% of prior runtime, nearly = to peak_local_max())
All tests in .feature and .morphology subpackages pass as written with these changes.
Todo:
* Fully document API
* remove commented-out old algorithm in is_local_maximum()
* add new tests for full coverage of new, more complex peak_local_max()