Refactor local block functions and add additional functionality.
Fix import namespace
Fix doc string examples
Update test cases for block functions
Update doc string for new functionality
Rename block_* functions to local_*
Fix deprecated function name referneces in doc strings
Use pad function and add option to define cval
Rename and combine local_* functions to block_reduce
Add short doc string example
Replace deprecated import of _local_func with block_reduce
Merge pull request #632 from ahojnnes/local-blocks

Refactor N-dimensial array resampling and add additional functionality