Rework directory structure

- code goes into /src

- prose in /doc

- /experimental is a playground

.gitmodules

 [submodule "ulo/coq.8.9.0"]
-	path = ulo/libraries/coq
+	path = experimental/ulo/libraries/coq
 	url = git@gl.mathhub.info:Coqxml/coq.8.9.0.git
 [submodule "ulo/Distribution"]
-	path = ulo/libraries/isabelle-distribution
+	path = experimental/ulo/libraries/isabelle-distribution
 	url = git@gl.mathhub.info:Isabelle/Distribution.git
 [submodule "ulo/AFP"]
-	path = ulo/libraries/isabelle-afp
+	path = experimental/ulo/libraries/isabelle-afp
 	url = git@gl.mathhub.info:Isabelle/AFP.git
 [submodule "ulo/ulo"]
-	path = ulo/ulo-owl
+	path = experimental/ulo/ulo-owl
 	url = git@gl.mathhub.info:ulo/ulo.git

README.md

 Directories
 ===========
 
-* `/doc`: Project documentation.
+* `/doc`: Project documentation. Includes a timeline to do list.
 
-* `/timeline`: Goals and results for each week.
+* `/experimental`: Playing around with various components and
+  technologies.
 
-* `/graphdb`: Playing with the RDF4J [3] API of GraphDB [4].
-
-* `/ulo`: Playing around w/ the results of the ULO paper [1, 2]
-
-* `/ulocollecto`: Implementation of ULO `Collector` components.
-
-References
-==========
-
-[1] https://kwarc.info/people/mkohlhase/papers/cicm19-ulo.pdf
-
-[2] https://gl.mathhub.info/ulo/ulo/blob/master/ulo.owl
-
-[3]  https://rdf4j.org/
-
-[4] http://graphdb.ontotext.com/
+* `/src`: Implementation source code.