v1.12.0

New methods and functions

• TopologyOnly() removes metadata from phylo objects.
• J1Index() computes the robust, universal tree balance measure of
  Lemant et al. 2022 doi:10.1093/sysbio/syac027, incorporating code by Rob Noble.

Enhancements

• Consistent sequence of list entries in phylo objects.
• RandomTree() returns trees for < 3 leaves.
• root_on_node() handles trees with < 2 leaves.
• Support larger trees in TotalCopheneticIndex(), fixing #158.