Add doc strings

[akamhy]

Added doc strings in all files in waybackpy dir except CLI as we still need to add features in CLI.

[pep8speaks]

Hello @akamhy! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file waybackpy/cdx.py:

Line 14:89: E501 line too long (89 > 88 characters)

• In the file waybackpy/snapshot.py:

Line 40:89: E501 line too long (106 > 88 characters)

• In the file waybackpy/utils.py:

Line 110:89: E501 line too long (91 > 88 characters)

• In the file waybackpy/wrapper.py:

Line 87:89: E501 line too long (106 > 88 characters)

Comment last updated at 2021-01-26 06:23:34 UTC

[codecov[bot]]

Codecov Report

Merging #90 (31e3eae) into master (88cda94) will decrease coverage by 0.17%. The diff coverage is 87.50%.

@@            Coverage Diff             @@
##           master      #90      +/-   ##
==========================================
- Coverage   91.11%   90.94%   -0.18%     
==========================================
  Files           8        8              
  Lines         563      563              
==========================================
- Hits          513      512       -1     
- Misses         50       51       +1     

Impacted Files	Coverage Δ
waybackpy/cdx.py	94.80% <ø> (ø)
waybackpy/cli.py	94.44% <ø> (ø)
waybackpy/snapshot.py	100.00% <ø> (ø)
waybackpy/wrapper.py	82.78% <71.42%> (-0.14%)	:arrow_down:
waybackpy/utils.py	89.80% <94.11%> (-0.58%)	:arrow_down:

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