OpenRocket 12.09 released

The new version of OpenRocket contains a huge number of improvements from a large range of contributors. The biggest improvements is initial 3D support (thanks to Bill Kuker) and component presets (thanks to Kevin Ruland and Doug Pedrick). Other new features include:

- Custom expressions in simulations
- Printing for centering ring and clustered centering ring components
- Support simple arithmetic in dimension entry
- Support deploying recovery device at stage separation
- Support for fractional inches (1/64) for unit length
- Added preference for windspeed units separately
- Added "most recently used files" in File Menu
- Improved printed accuracy in fin marking guide
- Calibration rulers added to printed templates
- Translations in Czech and Polish, numerous updates

A corresponding release for Android will follow shortly.