Add "spec" keyword for pipes_dict
Add new keyword "parameter" for show_runs pipe using "spec" new keyword
Add validator for new pipe format
Add empty dict into old style pipe definition
Adapt new format in dpmanip
Change pipe format in execute
Remove spec keyword
Enable to change rcpath by environment variable.
Rename genzshcomp to dpgenzshcomp.
Merge pull request #142 from termoshtt/pipe_nargs

Pipe nargs
Change DP_DEBUG_INI to DP_DEBUG_RCPATH.
Merge pull request #145 from kenbeese/rename-genzshcomp

Rename genzshcomp.
Bug fixed.
Enable to specify whitelist by string.
Update register.
Merge pull request #143 from kenbeese/debug-rcfile

Enable to change rcpath by environment variable.
Merge pull request #147 from kenbeese/hot-fix-dpmanip

`dpmanip` does not work well
Merge pull request #141 from kenbeese/hot-fix-scan

Enable to specify whitelist by string in scan pipe.