v6.0.0

ModelingToolkit v6.0.0

Diff since v5.26.0

Closed issues:

• Move expressions to RHS during lowering (#1037)
• Easy simplification doesn't happen (#1148)
• @connector is not documentable (#1155)
• modelingtoolkitize does not match form for Tuple and NamedTuple parameters (#1158)
• Trouble registering a closure (#1173)

Merged pull requests:

• New abstract time dependent/independent types & independent_variables method (#1091) (@lamorton)
• Use linear_expand and add simplify keyword argument (#1149) (@YingboMa)
• move connection_type to ReactionSystems from Reactions (#1153) (@isaacsas)
• More robust array symbolic handling (#1157) (@YingboMa)
• fix modelingtoolkitize for tuple and namedtuple parameters (#1162) (@ChrisRackauckas)
• automatically put nonlinear systems in canonical form (#1163) (@ChrisRackauckas)