Royalty calculation

[coveralls]

Pull Request Test Coverage Report for Build 1544

• 264 of 266 (99.25%) changed or added relevant lines in 4 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.07%) to 99.59%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
music_publisher/royalty_calculation.py	207	209	99.04%
<!--	Total:	264	266	99.25%	-->

Files with Coverage Reduction	New Missed Lines	%
music_publisher/admin.py	1	99.56%
<!--	Total:	1		-->

Totals
Change from base Build 1538:	-0.07%
Covered Lines:	3154
Relevant Lines:	3167

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💛 - Coveralls