Trycycler v0.4.2

This release fixes a bug where Trycycler would crash (probably at the MSA step) if any of the input FASTA files had lowercase bases. Thanks to @jdakota1305 for spotting this one: #10.

Trycycler now explicitly uses uppercase bases for all its steps. You can still give it lowercase FASTAs as input, but it will convert them to uppercase.