v1.1.4

• Added a cache cleanup handler that gets registered via
  reg.finalizer() upon package loading to ensure that the cache
  directory is removed if it doesn't contain any files that should
  persist between R sessions.

• Added an article about installation details incl. a
  troubleshooting section

• Improved function docs

• Improved examples by removing donttest blocks

• Improved examples & tests by using smaller example datasets to
  reduce runtime