PyPSA/linopy: Version 0.0.12

New Features A new module was created to export basic mathematical quantities such as lb, ub, c vectors and the A matrix. Use it with the matrices accessor in linopy.Model. For Constraints`` andVariables` aipython` autocompletion function for getting items was added. Inplace updates for constraints are now more flexible. AnonymousConstraint can now built from comparison operations of variables with constants, e.g. x >= 5. The Model.add_constraints function now support input of type ScalarVariable, ScalarLinearExpression and ScalarConstraint. Terms with zero coefficient are now filtered out before writing to file to avoid unnecessary overhead. The function sanitize_zeros was added to Constraints. Use this to filter out zero coefficient terms. Bug Fixes Solving with gurobi and io_api="direct" lead to wrong objective assignment if the objective contained non-unique variables. This is fixed in this version