Merge remote-tracking branch 'github/master' into arg-info-class

# Conflicts:
#	src/compute_chunk_atom.cpp
#	src/compute_chunk_spread_atom.cpp
#	src/compute_reduce.cpp
#	src/compute_reduce_region.cpp
#	src/compute_slice.cpp
#	src/fix_ave_atom.cpp

unittest/force-styles/tests/angle-quartic.yaml

@@ -1,7 +1,7 @@
 ---
 lammps_version: 24 Aug 2020
 date_generated: Tue Sep 15 09:44:35 202
-epsilon: 2.5e-13
+epsilon: 4e-13
 prerequisites: ! |
   atom full
   angle quartic

unittest/force-styles/tests/atomic-pair-reax_c_lgvdw.yaml

@@ -1,7 +1,7 @@
 ---
 lammps_version: 24 Aug 2020
 date_generated: Tue Sep 15 09:44:25 202
-epsilon: 1e-10
+epsilon: 2e-10
 prerequisites: ! |
   pair reax/c
   fix qeq/reax

unittest/force-styles/tests/fix-timestep-momentum.yaml

@@ -1,7 +1,7 @@
 ---
 lammps_version: 24 Aug 2020
 date_generated: Tue Sep 15 09:44:40 202
-epsilon: 4e-14
+epsilon: 5e-14
 prerequisites: ! |
   atom full
   fix momentum

unittest/force-styles/tests/fix-timestep-temp_csvr.yaml

@@ -1,7 +1,7 @@
 ---
 lammps_version: 24 Aug 2020
 date_generated: Tue Sep 15 09:44:43 202
-epsilon: 2e-14
+epsilon: 3e-14
 prerequisites: ! |
   atom full
   fix temp/csvr

unittest/force-styles/tests/mol-pair-tip4p_table.yaml

@@ -1,7 +1,7 @@
 ---
 lammps_version: 24 Aug 2020
 date_generated: Tue Sep 15 09:44:20 202
-epsilon: 1e-13
+epsilon: 2.5e-13
 prerequisites: ! |
   atom full
   pair tip4p/long

unittest/python/python-open.py

@@ -4,6 +4,7 @@ from lammps import lammps
 
 has_mpi=False
 has_mpi4py=False
+has_exceptions=False
 try:
     from mpi4py import __version__ as mpi4py_version
     # tested to work with mpi4py versions 2 and 3