v0.1.7

Added

• add NLL::project_with to do projecting and isolation in one step
• add __radd__ implementations wherever __add__ is implemented

Other

• bump dependency versions
• manipulate features to allow for MSRV of 1.70.0
• use latest rust version
• update readthedocs config in the hopes that it will properly build laddu
• increase TOC depth
• fix broken link