* [d3-sankey] Update to Minor 0.7
* [FEATURE] `nodeId(...)` Add ability to configure node id accessor function
* [FEATURE] `nodeAlign(...)` Add ability to configure horizontal alignment of layout
* [FEATURE] Add pre-build layout alignment functions
* [CHORE] Bump minor version number.
* [d3-sankey] [FIX] Add `height` property to node.
* d3-sankey:
* Initial incomplete draft of definitions (see TODOs) In particular issue with circular definitions given the source code approach to mutating nodes and links.
* Added tsconfig and tslint.
* Added initial draft of shape tests
* Subject to addressing SankeyNodes/SankeyLinks circularity in definitions
* Fixed return types of nodes() and links() to reflect source code rather than API Doc.
* Use intersection types to avoid circularity
* Using intersection types avoids running into the circularity issue with the generics driving SankeyNode an SankeyLink
* Refine SankeyLinkPathGenerator tests.
* Add interface tests for SankeyNode and SankeyLink
* Complete comments. Add one pathGen test.
* Fix lint errors.
* semicolon.
* Updated some comments.
* Some comments were updated to reflect the comments used in PR 23 to the d3-sankey repo
* Fix typo. Thx @gustavderdrache .
* Add Co-Maintainer
Andy Hanson