Fix error message when octave is not found and update docs
Switch back to try/catch instead of eval
Implement plot aspect ratio preservation
Add syntax error catching
Fix handling of ans.
More fixes to eval handling.
Add restarts on windows.
More fixes to "ans" behavior
Fix interrupt test.
Fix plotting and add ability to return (output, value) from eval.
Use (output, value) from Oct2Py.eval in octavemagic
Cleanup
More cleanup
Update docstring
Only replace the last 'ans =' in the text
More fixes to resp/data return from eval
Only print the response if there is one
Formatting
Fix failure on rmtree.
Update example notebook