* run clang-tidy with readability-braces-around-statements
clang-format the results
clean up all the parts that clang-tidy-8 broke
* fix problem on windows
* Removes ATOM/BOND_SPTR in boost::graph in favor of raw pointers
* Actually delete atoms and bonds...
* RWMol::clear now calls destroy to handle atom/bond deletion
* Changes broken Atom lookup for windows/gcc
* Adds tests for running with valgrind
* Adds test designed for valgrind and molecule deletions
* Removes RNG, actually tests bond deletions
* update swig wrappers
* deal with most recent changes on the main branch
instead of using the property map interface.
A nice side-effect is that the wart of having to use property maps to loop over bonds or atom neighbors
is now gone.
This potentially breaks lots of client C++ code.