support gzip'd input fasta

[nick-youngblut]

Running SibeliaZ v1.2.4 on gzip'ed input fasta files results in the following error:

Error: The FASTA header should start with a '>', started with ''
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error: Can't read the input file

Given that the user will almost definitely have their genome fasta files gzip'ed if they have 100's or 1000's (or more), it would be great if SibeliaZ supported gzip'ed (and maybe bzip2) compressed input.

[iminkin]

Hi,

Thank you for the suggestion! I will include it in the next release.