Fix id generation in interpreter for example program.

Add instruction to example program.

Put dsl definitions in a languages directory. Remove original playground file.

Add fromList convenience function. Refactor and extend eff-geomap.testing interpreter.

Add HasMarker and GetMarkers to eff-geomap dsl.

Remove unnecessary imports.

Rename map stuff to geomap.

Fix map drawing interpreter and extend demo program.

Split demos, interpreters, and programs, into directories.

Add beginning of a dsl for geo map example.

Add ramda lib. Put EffState example into a separate module.

Clean up. Add some type annotations.

Extract FFree into a separate module.

Add first messy examples.