[MRG] Change suppress_warnings to suppress_stdout

[vinayak-mehta]

Fixes #204.

[codecov-io]

Codecov Report

Merging #225 into master will decrease coverage by 0.05%.
The diff coverage is 92.3%.

@@            Coverage Diff             @@
##           master     #225      +/-   ##
==========================================
- Coverage   88.13%   88.08%   -0.06%     
==========================================
  Files          13       13              
  Lines        1408     1410       +2     
  Branches      331      333       +2     
==========================================
+ Hits         1241     1242       +1     
  Misses        114      114              
- Partials       53       54       +1

Impacted Files	Coverage Δ
camelot/handlers.py	82.5% <100%> (ø)	⬆️
camelot/cli.py	85.18% <100%> (ø)	⬆️
camelot/io.py	100% <100%> (ø)	⬆️
camelot/parsers/lattice.py	89.63% <100%> (+0.05%)	⬆️
camelot/parsers/stream.py	91.62% <66.66%> (-0.49%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 50780e2...591cfd5. Read the comment docs.