Small fixes

[codecov-io]

Codecov Report

Merging #137 into master will increase coverage by 0.01%. The diff coverage is 84.21%.

@@            Coverage Diff             @@
##           master     #137      +/-   ##
==========================================
+ Coverage    82.5%   82.51%   +0.01%     
==========================================
  Files          50       50              
  Lines        3229     3232       +3     
==========================================
+ Hits         2664     2667       +3     
  Misses        565      565

Impacted Files	Coverage Δ
iCount/logger.py	52.83% <ø> (ø)	:arrow_up:
iCount/mapping/xlsites.py	98.63% <ø> (ø)	:arrow_up:
iCount/genomes/ensembl.py	92.54% <ø> (ø)	:arrow_up:
iCount/externals/star.py	87.23% <ø> (ø)	:arrow_up:
iCount/demultiplex.py	92.85% <ø> (ø)	:arrow_up:
iCount/analysis/peaks.py	94.66% <ø> (ø)	:arrow_up:
iCount/cli.py	0% <0%> (ø)	:arrow_up:
iCount/tests/functional/gtf_variations.py	0% <0%> (ø)	:arrow_up:
iCount/tests/test_annotate.py	98.27% <100%> (-0.03%)	:arrow_down:
iCount/genomes/segment.py	100% <100%> (ø)	:arrow_up:
... and 5 more

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[tomazc]

Fix title of this PR.