[FIX] Extra newline in neu hexas
[ENH] Proto: add std::pow function
[ENH] UFEM: CF2 SUPG uses gradient tensor instead of normals
[DEV] UFEM: Checkpoint first polydisperse model work
[ENH] Proto: add access to the node index
[FIX] Proto: Compile errors after node_idx change
[DEV] UFEM: Constant particle coagulation term
Merge remote-tracking branch 'barche/master'