v0.2.16

PositiveIntegrators v0.2.16

Diff since v0.2.15

Merged pull requests:

• Bump julia-actions/julia-downgrade-compat from 1 to 2 (#168) (@dependabot[bot])
• Bump the all-github-actions group with 3 updates (#190) (@dependabot[bot])
• Consolidate in-place implementations for ConservativePDSProblems and PDSProblems (#191) (@SKopecz)