modelStudio v0.3.0

• modelStudio() now only works on explainer class object made with DALEX::explain()
• this version requires iBreakDown v1.0.0 and ingredients v1.0.0
• change cummulative to cumulative in code (#49)
• change dependency to dependence in code (#52)
• update package title and description
• change LICENSE to GPL-3 (#55)
• add boxplots to SV plot (#50)
• add eda argument to modelStudio()
• add show_boxplot argument to modelStudioOptions()