v1.0.0

• main script called viridian (viridian_workflow also kept for backwards compatibility, they are actually the same scripts)
• improved scheme detection, using mapped fragment ends to make a normalised score, and remove unseen primers
• add schemes artic5 and varskip
• add ion torrent support
• command line option to simulate fragments from reads and get the scheme scores
• output MSAs for tree building
• option to get reads from bam or download from ENA
• optionally run ReadItAndKeep
• plots of scheme score results and depth across genome
• qc TSV and masking includes handling indels and ambiguous IUPAC codes
• various bug fixes and other small improvements