Release 4.7.0

• Update register-version.js (fb33194)
• Merge pull request #309 from esbanarango/dependabot/npm_and_yarn/ember-source-4.12.3 (3268ca2)
• Bump ember-source from 4.12.0 to 4.12.3 (d42367b)
• Merge pull request #308 from esbanarango/dependabot/npm_and_yarn/types/ember__polyfills-4.0.2 (21f9a9e)
• Bump @types/ember__polyfills from 4.0.1 to 4.0.2 (d7fb045)
• Merge pull request #307 from esbanarango/dependabot/npm_and_yarn/types/ember__engine-4.0.5 (c2a2381)
• Bump @types/ember__engine from 4.0.4 to 4.0.5 (8994fb3)
• Merge pull request #306 from esbanarango/dependabot/npm_and_yarn/types/ember__array-4.0.4 (cbe551a)
• Bump @types/ember__array from 4.0.3 to 4.0.4 (92e5c7e)
• Merge pull request #305 from esbanarango/dependabot/npm_and_yarn/types/ember__application-4.0.6 (05bee40)
• Bump @types/ember__application from 4.0.5 to 4.0.6 (0a06fe5)
• Merge pull request #301 from esbanarango/dependabot/npm_and_yarn/semver-5.7.2 (6b8e25a)
• Merge pull request #304 from esbanarango/dependabot/npm_and_yarn/word-wrap-1.2.5 (69742ff)
• Bump semver from 5.7.1 to 5.7.2 (dc12c02)
• Bump word-wrap from 1.2.3 to 1.2.5 (8ab9ed4)