12 Dec 1203 (14 Dec 2019): Protected the poemline counter definition to avoid a clash with memoir. Version 2.2. 9 Nov 1203 (9 Nov 2019): Protected the index commands so that the package works with classes that don't include indices. Also removed two spurious "{"s. Thanks to David Carlisle for pointing out the issues to me. Version 2.1. 2 May 1203 (2 May 2019): Added ability to arbitrarily label both the left and right sides of the line. Version 2.0. X Sept 1202 (10 Sept 2018): Removed *requirement* for hyperref by inserting a fake definition for \phantomsection, which is the only hyperref command used. 17 June 1201 (19 June 2017): Version 1.0, initial release.