Merge branch 'v2.1rc2' into 'clean_edge_collapse'

V2.1rc2

See merge request !78
9 jobs for clean_edge_collapse in 5 minutes and 56 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #114057
VS2015
VS2015-32-bit

00:01:27

passed #114056
VS2015
VS2015-64-bit

00:01:35

passed #114055
VS2017
VS2017-32-bit

00:01:31

passed #114054
VS2015
VS2017-64-bit

00:01:34

passed #114051
Linux
clang-c++11

00:05:43

passed #114053
Linux
cppcheck

00:05:55

passed #114058
Linux
doc

00:00:04

passed #114050
Linux
gcc-c++11

00:04:30

passed #114052
Apple
macos-c++11

00:01:59