Summary
- now LinearSpanApproximation uses a semilattice for multiindex and coefficients storage (details)
- passing tests (details)
- semilattice constructors exposed in default transport map constructors (details)
- fixed init coeffs bug (details)
- fixed semilattice data structure for serialization (details)
- fixed bugs in tests (details)
- reshaped tests (details)
- passes all tests (details)