Merge pull request #2077 from rblomberg/yahoo-csv-url-fix

changed URL to the current CSV API for yahoo finance
Fix bug in XFG_CONFIG handling
Fix deprecation warning when running tests
Fixed failing test on python3.
Merge pull request #2080 from pelson/cmap_and_norm_levels_test_fix

Fixed failing test on python3.
Exclude the setuptools stubs in the correct way
Fix Issue #2060: Text bbox alignment
Fix multiline spacing so it takes into account extra sub/superscripts