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tokens: The authors thank Jennifer van Saders, Curtis McCully, Peter Brown, Saurabh Jha, and Louisa Diodato for discussions and encouragement, Toru Yusa for aid in translation, Joe Antognini for reading, and Ryan Foley for providing us with the spectra of SN 2009ig. We thank Neil Gehrels for approving our ToO requests and the Swift science operation team for performing the observations. We thank LCOGT and its staff for their continued support of ASAS-SN. We also thank the anonymous referee for his/her helpful comments and suggestions improving this manuscript. Development of ASAS-SN has been supported by NSF grant AST-0908816 and CCAPP at the Ohio State University. C.S.K. and K.Z.S. are supported by NSF grants AST-1515876 and AST-1515927. ASAS-SN is supported in part by the Mt. Cuba Astronomical Foundation. Operations of the Cassius ASAS-SN station are partially funded from project IC120009 Millennium Institute of Astrophysics (MAS) of the Millennium Science Initiative, Chilean Ministry of Economy. B.S. is supported by NASA through Hubble Fellowship grant HF-51348.001 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. T.W.-S.H. is supported by the DOE Computational Science Graduate Fellowship, grant number DE-FG02-97ER25308. Support for J.L.P. is in part provided by FONDECYT through grant 1151445 and by the Ministry of Economy, Development, and Tourism’s Millennium Science Initiative through grant IC120009, awarded to the Millennium Institute of Astrophysics, MAS. J.F.B. is supported by NSF grant PHY-1404311. S.D. is supported by “the Strategic Priority Research Program—The Emergence of Cosmological Structures” of the Chinese Academy of Sciences (grant No. XDB09000000). E.H. and M.S. are supported by the Danish Agency for Science and Technology and Innovation realized through a Sapere Aude Level 2 grant. P.R.W. is supported by the Laboratory Directed Research and Development program at LANL. CSPII is supported by the NSF under grants AST-0306969, AST-0607438, and AST-1008343. This paper uses data products produced by the OIR Telescope Data Center, supported by the Smithsonian Astrophysical Observatory. The Liverpool Telescope is operated on the island of La Palma by Liverpool John Moores University in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias with financial support from the UK Science and Technology Facilities Council. The Nordic Optical Telescope is operated by the Nordic Optical Telescope Scientific Association at the Observatorio del Roque de los Muchachos, La Palma, Spain, of the Instituto de Astrofisica de Canaries. This paper is based in part on observations obtained through the CNTAC proposal CN2015A-119. This paper used data obtained with the MODS spectrographs built with funding from NSF grant AST-9987045 and the NSF Telescope System Instrumentation Program (TSIP), with additional funds from the Ohio Board of Regents and the Ohio State University Office of Research. The LBT is an international collaboration among institutions in the United States, Italy, and Germany. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile. IRAF is distributed by the National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web site is http://www.sdss.org/ . This research has made use of data from the AAVSO Photometric All Sky Survey, whose funding has been provided by the Robert Martin Ayers Sciences Fund. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has also made use of the XRT Data Analysis Software (XRTDAS) developed under the responsibility of the ASI Science center (ASDC), Italy.