Python Upgrade to sympy 1.6.0, which is now required minimum version (#1098, #1103) Speed up model import Speed-up computation of sx0, reduce file size (#1109) Replace terribly slow sympy.MutableDenseMatrix.is_zero_matrix by custom implementation (#1104) speedup dataframe creation in get*AsDataFrame (#1088) Allow caching edatas for simulate_petab (#1106) Fix wrong deprecation warning (Fixes #1093) Fix segmentation faults in NewtonSolver under certain conditions (#1089, #1090, #1097) fix wrong power function call in unscale_parameter (#1094) Fix MathML conversion (#1086) Fix deepcopy of SymPy objects (#1091) Matlab handle empty rdata->{pre|post}eq_numlinsteps (Closes #1113), which previously made the matlab interface unusable Fix generation of compileMexFile.m for matlab compilation of python code (#1115) C++ Reduce memory requirements and speedup compilation of large models (#1105) Place generated code into own namespace (#937) (#1112) Fix several msvc compiler warnings (#1116) (Note that MSVC support is still experimental) breaking change for users of C++ interface Fix swig warning: ensure base class ContextManager is known before use (Fixes #1092) (#1101) CI Don't install/run valgrind on travis CI (done with github actions… (#1111)