- remove sqlite-db/close! as its not used and didn't make sense to be
used in other electron ns
- remove sqlite-db/connections atom as its not needed
- remove read-graph as its not necessary
- rename cli.persist-graph as its primary purpose has changed
- update effected scripts
This required adding support for property :properties to create-graph.
Also fixed a subtle bug where transact! silently fails for positive
:db/id integers. Also misc script cleanup and docs