Add some extensions for FASTA format.

[alumi]

Add some file extensions of FASTA format listed in https://en.wikipedia.org/wiki/FASTA_format#File_extension and http://fileformats.archiveteam.org/wiki/FASTA_and_FASTQ.

[totakke]

Thanks, I didn't know such various extensions exist. But if supporting them, fasta-index in cljam.io.fasta.core should be fixed. FASTA index of some extensions cannot be found.

[codecov]

Codecov Report

Merging #124 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #124      +/-   ##
==========================================
+ Coverage   84.81%   84.82%   +<.01%     
==========================================
  Files          62       62              
  Lines        4196     4197       +1     
  Branches      415      415              
==========================================
+ Hits         3559     3560       +1     
  Misses        222      222              
  Partials      415      415

Impacted Files	Coverage Δ
src/cljam/io/util.clj	100% <ø> (ø)	⬆️
src/cljam/io/fasta/core.clj	94.64% <100%> (+0.09%)	⬆️

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[alumi]

@totakke Thank you for pointing that. I forgot to check the index.

[totakke]

LGTM. Thanks.