remove data-packages submodule, we're bringing it home
revert data-packages back to this repository
Minor specification revisions

Tidied up introductory text for a few paragraphs, minor formatting changes to call out field names, relabelled sections to use a consistent structure (Required, Recommended, Optional)
move resources from MUST to MAY
introduce root property
rename base to root as per json-ld conventions
update metadata
[!][s]: change dependencies to dataDependencies fixes https://github.com/dataprotocols/dataprotocols/issues/75.
Remove last_modified and modified fields from package and resource objects
Fix link to official open source licenses

Fix md link.
Improve specification of encoding key
Specify default for encoding
[misc][xs]: s/Simple Data Format/Tabular Data Package/gc.
Update data-packages/index.md

There were some quotes missing in example json code.
note formal language, and use spec-specific layout
[#1,breaking][s]: added license field support and updated licenses.

* this is a breaking change in theory since changes structure of license field
[formatting][xs]: .
Ensure consistency between license/licenses as well as encourage license
consistency of the whole data package.
url MUST be specified if not using od-license
Fixed typo in data-packages/index.md

attibute => attribute