[Diff since v1.0.0](https://github.com/LCSB-BioCore/SBML.jl/compare/v1.0.0...v1.1.0) **Closed issues:** - Add `exponentiale` to `default_constants` (#213) - Power fails with negative exponents (#214) - Import species reference metadata (#218) **Merged pull requests:** - Pl/interpret fixes (#215) (@paulflang) - finish #215 (#219) (@exaexa) - remove the debugging leftover (#220) (@exaexa) - enable multiple arguments for comparisons (#221) (@paulflang) - use rule.variable instead of rule.id in seemsdefined (#222) (@paulflang) - implement full species references (#224) (@exaexa) - use the safer Object_createChild SBML methods. (#225) (@exaexa) - Formatting for #221 (#226) (@exaexa)