Minor change
Rewrote tests with bats As evidenced by the 11 prior commits, proper testing has revealed a large number of gaps and inconsistencies in these scripts. bats is a very capable replacement for the old test suite.
Big archival update mktar now experimentally supports SHA256 checksums and age encryption. mktar-batch is a version of mktar that strips out the 'clever' algorithm detection and includes a batch processing/common passphrase mechanism. Updated tests for mktar.
Remove temp test files
Remove static test files