Version 9.1 Bug fix release
- Separate releases for Windows 7 and Windows 10 (issue #173)
- 64 bit AppImage works in Ubuntu (issue #172)
- 64 bit AppImage works in Fedora (issue #168)
- Fix crash if graph points are generated before axis points (issue #167)
- Default for import cropping brings up cropping window for multi-page pdfs (issue #166)