Give a better message for "running an old version of Scythebill with a newer bsxm file"

[Adam Winer]

… at least for “java.lang.IllegalArgumentException: No mapping for taxonomy clements2019”

Perhaps I should be making more of a practice of upgrading the .bsxm version (which catches this more elegantly).

[Adam Winer]

Commit 469793391 would resolve “No mapping for clements2019”, at least in the future.

[Adam Winer]

Issue #457 was marked as a duplicate of this issue.

[Adam Winer]

Resolve Issue #452: give a better error message for invalid taxonomies, which basically occur when I release a new eBird/Clements taxonomy and don't update the .bsxm version number, which I always should.

→ <<cset df5d4b09dd7b>>

[Adam Winer]

Fixed, though it can only help in future years if I forget to update the .bsxm version number. Can’t help existing users of 14.7/14.7.1. Getting out 14.7.2 will moot the issue though.