For CSE, don't fail if ME matrix is not correctly symmetrized due to numerical error.
For CSE, don't fail if ME matrix is not correctly symmetrized due to numerical error.

I'm working on CH3 + H <=> CH4 at the moment, which is a single-well
network with a relatively large barrier (~100 kcal/mol). For this system I
have found that the ME matrix isn't quite properly symmetrized when
applying the CSE method, but that the only entries that are wrong all
have entries of 1e-200 or lower. These are not important to the CSE
calculation, so we don't need to fail if this is encountered.

Also now prints all entries that are incorrectly symmetrized before
failing.

nickvandewiele/RMG-Py,nickvandewiele/RMG-Py,nyee/RMG-Py,comocheng/RMG-Py,comocheng/RMG-Py,pierrelb/RMG-Py,chatelak/RMG-Py,chatelak/RMG-Py,enochd/RMG-Py,KEHANG/RMG-Py,faribas/RMG-Py,faribas/RMG-Py,pierrelb/RMG-Py,nyee/RMG-Py,enochd/RMG-Py,KEHANG/RMG-Py