Add scale/offset filter support.
Tweaked unit tests (per suggestions by dsdale)
Simplified API to use only ``scaleoffset`` (eliminating ``scaleoffset_opts``).
Cleaned up unit tests and documentation.
Merge pull request 258 (fix for memory leak)
Merge pull request 258 (fix for memory leak)
Fix array type problems (issue 211), except for scalar broadcasting
Update tests for array type issues
Add test documenting issue 253
Add check to auto-chunking code to avoid infinite loop
Merge branch 'scaleoffset'
Merge branch 'issue_253'
Merge branch 'issue_211'
Fix for cython git version (e.g., 0.19-dev).
Merge remote-tracking branch 'mr/cython'