Release v1.7.0

This release fixes a major bug preventing the alignments with lastz of the source's small contigs (if large genome), particularly relevant for small, fragmented genomes. It also introduces additional minor changes, workflow customization options, and optimization of the environments.

If affected by the bug, we recommend to discard the older workflow version (<1.7.0) using nextflow drop evotools/nf-LO and rerun the analyses with the newer release.

Release notes:

1. Fix bug aforementioned preventing the lastz alignment of small source contigs or small fragmented source genomes
2. Add support to mamba through the --mamba flag
3. Updated minimal version of nextflow to 21.10.6 in order to support the mamba installation of dependencies
4. Added a new anaconda environment for mafTools
5. Added the possibility of providing custom conservation scores with the --qscores option, followed by the appropriate Q-score file