Fix %.6f --> %.6e, which cause values to be cropped to 1e-6 accuracy!
Stricter path friendly standards: only allow alphanumeric characters.
Fix executing interactive scripts on linux.
Only parse "slow value" from trace title, if it contains exactly one number. Also write an INFO level message warning about it.
Fixes to error handling.
Remove debugging print statement accidentally left in.
Handle single traces and check that all "slow coordinates" are unique.
Deal with irregular grid point spacing better.
Tweak division into sweeps based on an increasing/decreasing coordinate (once again!).
Show how to load real data in the example.