Raise AuthenticationError when invalid credentials

[chasleslr]

No description provided.

[codecov-commenter]

Codecov Report

Merging #10 (a28d5b2) into develop (521c595) will increase coverage by 0.56%.
The diff coverage is 97.29%.

@@             Coverage Diff             @@
##           develop      #10      +/-   ##
===========================================
+ Coverage    97.80%   98.37%   +0.56%     
===========================================
  Files           25       27       +2     
  Lines          958     1106     +148     
===========================================
+ Hits           937     1088     +151     
+ Misses          21       18       -3     

Impacted Files	Coverage Δ
setup.py	0.00% <ø> (ø)
src/metabase/missing.py	100.00% <ø> (ø)
src/metabase/resources/dataset.py	100.00% <ø> (ø)
src/metabase/resources/field.py	98.09% <0.00%> (ø)
src/metabase/resources/metric.py	100.00% <ø> (ø)
tests/resources/test_permission_membership.py	100.00% <ø> (ø)
src/metabase/resources/user.py	92.68% <50.00%> (ø)
src/metabase/__init__.py	100.00% <100.00%> (ø)
src/metabase/exceptions.py	100.00% <100.00%> (ø)
src/metabase/metabase.py	95.74% <100.00%> (ø)
... and 15 more

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