NodeIndex.Find() and test for the same
Rename files to be singular nouns
rename "empty" to "emptyProps"
Tests for Create Node.
Test for Get Node
18.4.4. Get non-existent node
Test for 18.4.5. Delete node
Test for 18.4.6. Nodes with relationships can not be deleted
Remove big compound TestNode() function, it having been replaced by the several
tests in node_test.go.