Add unidecode to the list of dependencies in setup.py;

Status Job ID Name Coverage
  Build
failed #4124
build:2.7

failed #4125
build:3

 
  Test
skipped #4127
allowed to fail
lint:2.7
skipped #4130
allowed to fail
lint:3
skipped #4126
pyflakes:2.7
skipped #4129
pyflakes:3
skipped #4128
unittests:2.7
skipped #4131
unittests:3
 
  Deploy
skipped #4132
doc:2.7
skipped #4133
doc:3
 
Name Stage Failure
failed
build:2.7 Build There is an unknown failure, please try again
No job trace
failed
build:3 Build There is an unknown failure, please try again
No job trace