Add delete and download functions

[mkmer]

Description:

Add the Delete and Download functions for blinksync app.

Related issue (if applicable): fixes #

Checklist:

• Local tests with tox run successfully PR cannot be meged unless tests pass
• Changes tested locally to ensure platform still works as intended
• Tests added to verify new code works

[codecov]

Codecov Report

Merging #745 (df6f510) into dev (9fa0b2e) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev     #745   +/-   ##
=======================================
  Coverage   99.64%   99.64%           
=======================================
  Files           8        8           
  Lines        1394     1424   +30     
=======================================
+ Hits         1389     1419   +30     
  Misses          5        5           

Flag	Coverage Δ
unittests	99.64% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
blinkpy/helpers/util.py	100.00% <100.00%> (ø)
blinkpy/sync_module.py	100.00% <100.00%> (ø)

[mkmer]

I keep having these problems - tox passes locally, then it fails tests here. It appears the local tox doesn't run black... and I keep forgetting to do it :(

[mkmer]

With this piece in place, we should be clear to release to pypi and I'll put in a PR to use it :)

[fronzbot]

I keep having these problems - tox passes locally, then it fails tests here. It appears the local tox doesn't run black... and I keep forgetting to do it :(

Yeah I need to fix the linting tests- not sure why I never added it to tox to begin with