remove all `display` on style attribute.
Merge pull request #18 from viobo/master

Remake autodiscovery module
add test case for display: xxx;
Merge pull request #16 from Kjwon15/master

Ignore all display: properties in inline styles
A RSS 2 feed has to be checked whether it is valid as Atom

For now, `check_valid_as_atom()` checks whether feed data has `updated` data
and put appropriate data if updated is not present
earthreader/web#17
Add docstrings in parse_rss()
PEP 8
@vio Empty title should be empty string, not None

[ci skip]
indent fix for readability.
Empty title generates empty string instead of None
Merge pull request #19 from Kjwon15/indent-fix

indent fix for readability.
Fill error types in except statement with no error types
Open original http opener when request data not in mocking table