List of changes for gnuplot.el version 0.8.0 ranging from March 2014
to January 2021.

• Changed project license to GPLv3.

• Greatly simplify the compilation process.

• Fix deprecated calls to the cl library.

• Deprecated XEmacs support. Bump minimal GNU Emacs version to 24.3.

• Add a gnuplot-program-args variable for passing additional
  arguments to the gnuplot program binary.

• The gnuplot-inline-image-mode can now take three values: nil,
  inline, dedicated.

• Add the gnuplot-use-context-sensitive-completion configuration
  option.

• Removed the gnuplot-bug-report function.

• The provided gnuplot.info manual file has been updated for gnuplot
  version 5.2.6.

• Add the gnuplot-program-args customization option to pass
  additional arguments to the gnuplot process.

• Use syntax-proprietize-rules in gnuplot buffers.

• gnuplot-context-sensitive-mode is now a normal minor mode.

• Enable completion-at-point in gnuplot comint buffers.

• Remove the unused dotemacs.el file.

• comint-process-echoes is now buffer-local.