Uitestcore

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- Changed logging so that it was an optional argument when instantiating BasePage
- Created auto_log decorator for helper classes

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- Adding pull request template
- Starting change log

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- Fix close_current_window

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- Changed the screenshots functionality to emit azure warnings and errors instead of failures when past test results
were reporting ghost test failures

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- Added unit test coverage and linting checks to build

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- Removed Behave fixture and dependencies