Updated License Years
Updated License Date
Better detection of zero-equivalence in calculate_series()
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Merge pull request #2851 from skirpichev/calculate_series-fix

Better detection of zero-equivalence in calculate_series()
Fix py.test failures for test_wester.py: Float's -> Rational's
Mark test_R15() as slow
Travis: split pypy tests more
Travis: remove pypy from allowed failures
Merge pull request #2847 from edschembor/edBranch

Updated License Years
Merge pull request #2864 from skirpichev/travis-enable-pypy

Travis: remove pypy from allowed failures