Merge pull request #8 from Siemienik/master

Parsers Layer skeleton + Rss/Atom Parser
Wpf layer
some styles
view models
Merge https://github.com/Harunx9/Rss-Atom-Reader into harum-tests
Merge branch 'tests' of https://github.com/PZPP-ath/Rss-Atom-Reader into tests
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