v0.5.31

Trixi v0.5.31

Diff since v0.5.30

Merged pull requests:

• [WIP] Wet/dry capabilities for 2D shallow water equations (#1340) (@svengoldberg)
• Add parabolic BCs for P4estMesh{2} (#1493) (@jlchan)
• fix some typos in docstrings of flux splittings (#1550) (@ranocha)
• Bump crate-ci/typos from 1.15.1 to 1.15.6 (#1552) (@dependabot[bot])
• Bump crate-ci/typos from 1.15.6 to 1.15.10 (#1559) (@dependabot[bot])
• fix typo in docs (#1560) (@ranocha)