added NetworkError reason and status code

[arossert]

Adding more information on network errors

[codecov]

Codecov Report

Merging #35 into master will decrease coverage by 17.16%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #35       +/-   ##
==========================================
- Coverage   89.86%   72.7%   -17.17%     
==========================================
  Files           9       9               
  Lines         306     381       +75     
==========================================
+ Hits          275     277        +2     
- Misses         31     104       +73

Impacted Files	Coverage Δ
lastpass/fetcher.py	60.83% <100%> (-35.22%)	⬇️
lastpass/parser.py	72.02% <0%> (-15.03%)	⬇️
lastpass/vault.py	75.6% <0%> (+1.25%)	⬆️

---

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[codecov]

Codecov Report

Merging #35 into master will decrease coverage by 17.16%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #35       +/-   ##
==========================================
- Coverage   89.86%   72.7%   -17.17%     
==========================================
  Files           9       9               
  Lines         306     381       +75     
==========================================
+ Hits          275     277        +2     
- Misses         31     104       +73

Impacted Files	Coverage Δ
lastpass/fetcher.py	60.83% <100%> (-35.22%)	⬇️
lastpass/parser.py	72.02% <0%> (-15.03%)	⬇️
lastpass/vault.py	75.6% <0%> (+1.25%)	⬆️

---

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 5063911...a1c0d8d. Read the comment docs.