Created implementation of multinode upsert
Fixed most of the implementation errors upserting, should switch to using a writable CTE
Handled the random table name problem
Simplyfy random table name
Merge branch 'master' of github.com:aackerman/mtree into multinode-upsert
Created working multinode upsert
Working version of upsert, currently ignoring null values
Handle nulls when upserting by deleting descendant paths
Added skipped test to be implemented later
Merge pull request #2 from aackerman/multinode-upsert

Multinode upsert