Upgrade packages and fix deprecated code

[codecov-io]

Codecov Report

Merging #33 into develop will increase coverage by 42.6%. The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop      #33      +/-   ##
===========================================
+ Coverage    25.84%   68.44%   +42.6%     
===========================================
  Files           31       31              
  Lines          917      916       -1     
===========================================
+ Hits           237      627     +390     
+ Misses         680      289     -391

Impacted Files	Coverage Δ
pawprints/urls.py	100% <ø> (+100%)	:arrow_up:
petitions/profanity.py	91.3% <100%> (+68.57%)	:arrow_up:
petitions/views.py	68.72% <100%> (+46.5%)	:arrow_up:
petitions/models.py	90.62% <100%> (ø)	:arrow_up:
pawprints/settings.py	100% <100%> (ø)	:arrow_up:
petitions/tests.py	100% <100%> (+77.57%)	:arrow_up:
profile/tests.py	100% <100%> (+68.42%)	:arrow_up:
auth/util.py	9.09% <0%> (+9.09%)	:arrow_up:
profile/models.py	95.83% <0%> (+16.66%)	:arrow_up:
petitions/consumers.py	42.25% <0%> (+19.71%)	:arrow_up:
... and 14 more

---

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 6b18832...1d0e8d0. Read the comment docs.