18.11 merge into master

[coveralls]

Pull Request Test Coverage Report for Build 462

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.2%) to 98.859%

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Files with Coverage Reduction	New Missed Lines	%
music_publisher/admin.py	2	97.92%
<!--	Total:	2		-->

Totals
Change from base Build 455:	-0.2%
Covered Lines:	1213
Relevant Lines:	1227

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 464

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.003%) to 99.019%

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Totals
Change from base Build 455:	-0.003%
Covered Lines:	1211
Relevant Lines:	1223

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💛 - Coveralls