v3.0.0-beta.4

• feat(profileFactory): adding firebase parameter to profileFactory callback - #772 - @dannyvaughton
• feat(core): add eslint-plugin-json and update jsdoc comments
• fix(core): use import * in place of index file for actions
• feat(ci): add node 12 to travis build versions
• feat(core): remove consumer exports from top level API (available from Context.Consumer)
• feat(docs): more v3 API change updates to docs
• fix(examples): update firestore example with v3 api
• chore(deps): update documentationjs version to 12.1.2
• chore(deps): update webpack to 4.41.0