Extensions notices fixed, refs #981.
Block position fixed, closes #981.
allow all params to `System::dump()`. refs #968
Merge pull request #994 from phaidon/extensions-notices-fix

Extensions notices fixed, refs #981.
Merge pull request #996 from phaidon/block-position-fix

Block position fixed, closes #981.
Merge pull request #998 from craigh/systemdump

allow all params to `System::dump()`. refs #968