Add barcode plot

[cbouy]

Closes #120

[codecov[bot]]

Codecov Report

Merging #147 (6d6bfac) into master (51fa0f4) will decrease coverage by 1.24%. The diff coverage is 83.80%.

@@            Coverage Diff             @@
##           master     #147      +/-   ##
==========================================
- Coverage   96.77%   95.54%   -1.24%     
==========================================
  Files          15       18       +3     
  Lines        1179     1279     +100     
==========================================
+ Hits         1141     1222      +81     
- Misses         38       57      +19     

Files Changed	Coverage Δ
prolif/plotting/barcode.py	80.45% <80.45%> (ø)
prolif/exceptions.py	100.00% <100.00%> (ø)
prolif/fingerprint.py	98.18% <100.00%> (+0.68%)	:arrow_up:
prolif/plotting/network.py	96.48% <100.00%> (+0.42%)	:arrow_up:
prolif/plotting/utils.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes