feature(json-formatter): enhancements and bugfixes (closes #247)

[emoralesb05]

Description

Enhancements and bugfixes for json-formatter module.

What's included?

• feature(json-formatter): add collapse animation to json-formatter
• feature(json-formatter): use mdTooltip instead of title
• feature(json-formatter): Improved efficiency by changing its change detection to OnPush + added refresh method for explicit change detection.
• code-health(json-formatter): added initial unit tests for json-formatter
• bugfix(json-formatter): recreate children array so it doesnt append the new children data. (closes JSON Formatter appends new object instead of show new object only. #247)
• update docs and README.md

Test Steps

• ng serve
• Go to http://localhost:4200/#/components/json-formatter and see changes
• npm run test and see the before and after for code-coverage.

Before unit tests:

After unit tests:

Screenshots or link to CodePen/Plunker/JSfiddle

[coveralls]

Coverage increased (+0.7%) to 68.686% when pulling 266a40c on feature/json-formatter-enhancements into 48cdbca on develop.

[coveralls]

Coverage increased (+2.5%) to 70.476% when pulling 2a63aeb on feature/json-formatter-enhancements into 48cdbca on develop.

[coveralls]

Coverage increased (+2.5%) to 71.07% when pulling 4037761 on feature/json-formatter-enhancements into 8015a67 on develop.

[kyleledbetter]

any concerns with a super long object/info in the tooltip? there's improvements coming from material2 but they currently don't handle long text too well

[kyleledbetter]

Ok i answered my own question, looks like it truncates w/ ... 👍