What's Changed
* Print traceback when unexpected errors are caught in the GUI by ortk95 in https://github.com/ortk95/planetmapper/pull/189
* Updating backplane names in examples by ortk95 in https://github.com/ortk95/planetmapper/pull/190
* Adding composite transfrormations using `km` coordinates by ortk95 in https://github.com/ortk95/planetmapper/pull/191
* Adding `km` target plane distance backplanes by ortk95 in https://github.com/ortk95/planetmapper/pull/192
* Adding unit tests for map outputs by ortk95 in https://github.com/ortk95/planetmapper/pull/193
**Full Changelog**: https://github.com/ortk95/planetmapper/compare/v1.5.0...v1.5.1