Merge branch 'cleanup/basic-ex-neumann' into 'master'
[basic] simplify Neumann function
See merge request !156 (merged)
(cherry picked from commit 250cab51)
bc79eb34 [basic] simplify Neumann function
[basic] simplify Neumann function
See merge request !156 (merged)
(cherry picked from commit 250cab51)
bc79eb34 [basic] simplify Neumann function