Add note to scipy.optimize.brute_force about the datatype of the evalution.
fix typo in error message

fix typo in error message in l. 1213
Merge pull request #3972 from andreas-h/patch-1

MAINT: fix typo in error message
MAINT: preliminary PEP8/pyflakes cleanup.
FIX: better error message for multivariate normal.

This is a fix for GH #3493.
Merge pull request #2794 from pdebuyl/doc_optimize_brute

Add note to scipy.optimize.brute_force about the datatype of the evalution.
Merge pull request #3973 from jvkersch/fix-gh-3493-multivariate-normal-error-msg

MAINT: better error message for multivariate normal.