Sequence Utility
by Ivano Zara Riccardo Schiavon
Reverse/complementary sequence

Given a nucleotide sequence, it returns its complementary, reverse and reverse/complementary
Only the compatible IUPAC characters are taken into the input sequence, all the others will be deleted.
Warnings will be returned if any alphanumeric characters that are incompatible with IUPA codes will be found and non-canonical bases exist
This program can also be used to 'clean' (delete) sequences from irrelevant characters

Warning: all non-IUPAC characters will be deleted.