[biocaml/biocaml] 90a9cc: update wrt core_kernel v0.13

[pveber]

Branch: refs/heads/master
Home: https://github.com/biocaml/biocaml
Commit: 90a9cc7fd15fbe771ce159fda407aff39f477238
https://github.com/biocaml/biocaml/commit/90a9cc7fd15fbe771ce159fda407aff39f477238
Author: Philippe Veber <philipp...@gmail.com>
Date: 2020-01-07 (Tue, 07 Jan 2020)

Changed paths:
M lib/unix/bam.ml
M lib/unix/bar.ml
M lib/unix/bgzf.ml
M lib/unix/bgzf.mli
M lib/unix/bin_pred.ml
M lib/unix/bpmap.ml
M lib/unix/cel.ml
M lib/unix/entrez.ml
M lib/unix/fasta.ml
M lib/unix/fastq.ml
M lib/unix/future_unix.ml
M lib/unix/gff.ml
M lib/unix/histogram.ml
M lib/unix/interval_tree.ml
M lib/unix/iset.ml
M lib/unix/jaspar.ml
M lib/unix/lines.ml
M lib/unix/math.ml
M lib/unix/mzData.ml
M lib/unix/phred_score.ml
M lib/unix/psl.ml
M lib/unix/pwm.ml
M lib/unix/rSet.ml
M lib/unix/range.ml
M lib/unix/sam.ml
M lib/unix/sbml.ml
M lib/unix/sgr.ml
M lib/unix/solexa_score.ml
M lib/unix/table.ml
M lib/unix/track.ml
M lib/unix/vcf.ml
M lib/unix/wig.ml

Log Message:
-----------
update wrt core_kernel v0.13

should be compatible with core_kernel v0.12