hiddenSymmetries/simsopt: v0.7.1

What's Changed Transfer most Shifter info to the wiki by @landreman in https://github.com/hiddenSymmetries/simsopt/pull/193 Documentation on shifter by @mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/191 Tidying up requirements by @landreman in https://github.com/hiddenSymmetries/simsopt/pull/196 MPIObjective and more geometry objectives by @florianwechsung in https://github.com/hiddenSymmetries/simsopt/pull/188 singularity container by @mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/192 Real-space surface dofs by @landreman in https://github.com/hiddenSymmetries/simsopt/pull/194 Write vmec input files by @landreman in https://github.com/hiddenSymmetries/simsopt/pull/197 spec import updated by @mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/198 Control vmec printing by @landreman in https://github.com/hiddenSymmetries/simsopt/pull/199 Fix to ScalarPotentialRZMagneticField by @ejpaul in https://github.com/hiddenSymmetries/simsopt/pull/200 Radial profiles and bootstrap current by @landreman in https://github.com/hiddenSymmetries/simsopt/pull/195 Full Changelog: https://github.com/hiddenSymmetries/simsopt/compare/v0.7.0...v0.7.