Atbash-cipher: Add tests for decoding input with incorrect spacing (#1277)
Atbash-cipher: Add tests for decoding input with incorrect spacing (#1277)

* Added tests for decoding without correct ciphertext spacing like the test for affine-cipher
* Added version update to canonical-data.json
exercism/x-common,jmluy/x-common,petertseng/x-common,exercism/x-common,ErikSchierboom/x-common,rpottsoh/x-common,jmluy/x-common,rpottsoh/x-common,jmluy/x-common,ErikSchierboom/x-common,petertseng/x-common