Start 0.19.1

[richardjgowers]

Wait for #2095 to merge before accepting this

[codecov]

Codecov Report

Merging #2096 into develop will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff            @@
##           develop    #2096   +/-   ##
========================================
  Coverage    89.41%   89.41%           
========================================
  Files          157      157           
  Lines        18765    18765           
  Branches      2711     2711           
========================================
  Hits         16778    16778           
  Misses        1382     1382           
  Partials       605      605

Impacted Files	Coverage Δ
package/MDAnalysis/core/groups.py	97.36% <ø> (ø)	⬆️
package/MDAnalysis/coordinates/LAMMPS.py	89.31% <ø> (ø)	⬆️
package/MDAnalysis/coordinates/memory.py	96.02% <ø> (ø)	⬆️
package/MDAnalysis/topology/TOPParser.py	100% <ø> (ø)	⬆️
package/MDAnalysis/analysis/dihedrals.py	96.52% <ø> (ø)	⬆️
package/MDAnalysis/topology/LAMMPSParser.py	95.33% <ø> (ø)	⬆️
package/MDAnalysis/coordinates/PDB.py	88.88% <ø> (ø)	⬆️
package/MDAnalysis/analysis/density.py	64.94% <ø> (ø)	⬆️
package/MDAnalysis/core/topologyobjects.py	98.41% <ø> (ø)	⬆️
package/MDAnalysis/version.py	100% <100%> (ø)	⬆️

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[orbeckst]

lgtm

(I was looking for these commits on develop... then I checked this PR)

[orbeckst]

@richardjgowers no more WIP, I suppose?