[Diff since v0.5.6](https://github.com/LCSB-BioCore/SBML.jl/compare/v0.5.6...v0.6.0) **Closed issues:** - `parseSBML` function to directly pass in an XML string (#111) - piecewise handling fails (#112) - Rename helper functions like `getS` to nicer names (#121) - Extracting math with <geq/> returns a zero character (#124) - expandInitialAssignments converter fails on case 01234 (#125) **Merged pull requests:** - Use `Unitful` for units, instead of a custom struct (#109) (@giordano) - Rename `SBMLVersion` -> `Version` and unexport it (#120) (@giordano) - Rename some functions to something easier understand (#122) (@giordano) - Add function to read SBML model from a string (#123) (@giordano) - Fix checking of errors in `libsbml_convert` (#126) (@giordano) - Always pass `report_severities` argument to `check_errors` (#127) (@giordano) - fix parsing of relational operators (#128) (@exaexa) - version bump to 0.6.0 (#129) (@exaexa)