Removed non-implemented except for sniff
Removed unimplemented (henceforth new features in dev-* branches)
Made working sniff function
Improved sniff output formatting
Removed prot_amb and nucl_amb from sniff
Added print total seqs to sniff
Updated snif CDS logic
Merged dev-sniff with main develop branch
Added basic handling for improper input
Release version 1.2.1