Make the C++ standard explicit in the .clang-format C++11 was sometimes being detected with the previous "Auto" setting and this screwed up template formatting.
Make the C++ standard explicit in the .clang-format
C++11 was sometimes being detected with the previous "Auto" setting and this screwed up template formatting.

adalke/rdkit,jandom/rdkit,rvianello/rdkit,bp-kelley/rdkit,adalke/rdkit,bp-kelley/rdkit,greglandrum/rdkit,greglandrum/rdkit,rvianello/rdkit,greglandrum/rdkit,bp-kelley/rdkit,ptosco/rdkit,ptosco/rdkit,jandom/rdkit,rvianello/rdkit,bp-kelley/rdkit,rdkit/rdkit,greglandrum/rdkit,rdkit/rdkit,adalke/rdkit,jandom/rdkit,bp-kelley/rdkit,jandom/rdkit,ptosco/rdkit,rdkit/rdkit,rdkit/rdkit,rvianello/rdkit,adalke/rdkit,greglandrum/rdkit,ptosco/rdkit,ptosco/rdkit,jandom/rdkit,adalke/rdkit,rvianello/rdkit,bp-kelley/rdkit,rdkit/rdkit,rvianello/rdkit,bp-kelley/rdkit,adalke/rdkit,adalke/rdkit,rdkit/rdkit,rdkit/rdkit,greglandrum/rdkit,jandom/rdkit,rvianello/rdkit,ptosco/rdkit,jandom/rdkit,ptosco/rdkit,rvianello/rdkit,ptosco/rdkit,greglandrum/rdkit,adalke/rdkit,greglandrum/rdkit,rdkit/rdkit,jandom/rdkit,bp-kelley/rdkit