v0.1.0 release

Major Changes

• Added most plotting styles available in Gnuplot v6.0.
• Changed handling for multi-dimensional datasets, which are necessary for several plotting styles.
  • E.g. 2D plots can now have more than two data columns even if they aren't used by the plotting style.
  • Higher column dimensions can now be used by plotting styles (e.g. circles).
• Added possibility to define the style of the plotted data.
• Some refactoring and updating for go v1.24.