add helper function to sort by time dimension #319

Added helper function with test.
add helper function to sort by time dimension #319

Doc changes.
ipynb changes
ugid shapefile not wrapped #320

User geometries now appropriately wrapped. During the refactor of
subset this functionality broke and is now explicitly tested. This
only affected 0 to 360 coordinate systems.
add moving window average #309

Adding moving window calculations with docs.
add moving window average #309

Add long/standard names to Convolve1D and a fix for parameter
formatting.
Merge branch 'next' into i318-icclim
mark - fixed array printing to history; all tests pass