Found one instance of obj._logger being called.  I converted it to just a print statement for now...
PS - The pull request approach will be way too annoying for these little fixes!  I'll use for larger projects/features/etc, but not for little bugs like this.
Some clean up for map_pores and map_throats
- if you call geom.map_pores() with no arguments, it automatically assumes the target is self._net and pores/throats is self.Ps/Ts
- Note that this is the same as doing net['pore.'+geom.name]