Map pg's uuid to graphene's uuid

[ticosax]

This is probably a backward incompatible change.

What do you suggest to circumvent this ?

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.07%) to 91.967% when pulling 5d63578 on ticosax:map-uuid into c9af40c on graphql-python:master.

[coveralls]

Coverage increased (+0.02%) to 97.297% when pulling 64839d3 on ticosax:map-uuid into c89cf80 on graphql-python:master.

[codecov-commenter]

Codecov Report

Merging #203 (86a9838) into master (869a55b) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #203      +/-   ##
==========================================
+ Coverage   96.92%   96.94%   +0.01%     
==========================================
  Files           9        9              
  Lines         618      621       +3     
==========================================
+ Hits          599      602       +3     
  Misses         19       19              

Impacted Files	Coverage Δ
graphene_sqlalchemy/converter.py	97.05% <100.00%> (+0.06%)	⬆️

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[erikwrede]

Added to #353, thank you for the PR!