Add --replace option in dpmanip
Regenerate _dpmanip
Merge pull request #128 from termoshtt/replace_option

Add --replace option in dpmanip
Introduce nodes.update

fix doc
Add new strategy "raise"

Revise tests for dp.nodes
Revise update strategy in dp.io
Revise update strategy in pipes.add_node

Revise test for pipes.add_node