BUG: ensure integer shape, strides for as_strided
Merge pull request #3845 from mbyt/out_of_memory_access_as_strided

BUG: ensure integer shape, strides for as_strided
Added missing implementation of get_window_extent for AxisImage and test (fixes #2980).
Reduce linewidth for PEP-8 compliance.
Split long line.
Merge pull request #3861 from maxalbert/fix_get_window_extent

Added missing implementation of get_window_extent for AxisImage and test (fixes #2980).
typeFace as bytestring in Py3