Date: Add formatDateToParts

[rxaviers]

Supersedes #697, Fixes #678

List of part types, its respective CLDR date fields, and comparison with Intl DateTimeFormat formatToParts.

Globalize	CLDR date fields	Intl formatToParts
era	era	era
year	year	year
quarter	quarter	-
month	month	month
week	week	-
day	day	day
weekday	weekday	weekday
dayperiod	dayperiod	dayPeriod
hour	hour	hour
minute	minute	minute
second	second	second
zone	zone	timeZoneName
literal	literal	literal

List of part types and the corresponding CLDR date field patterns.

part type	CLDR date field	CLDR date field patterns
era	era	G
year	year	yY
quarter	quarter	qQ
month	month	ML
week	week	wW
day	day	dDF
weekday	weekday	ecE
dayperiod	dayperiod	a
hour	hour	hHkK
minute	minute	m
second	second	sSA
zone	zone	zOxX
literal	literal

Checklist: Checklist

• [x] Implementation
  • [x] Functionality
  • [x] Coding style (build passes)
  • [x] formatDateToParts and dateToPartsFormatter.
• [x] Unit tests
  • [x] Update test/unit/date/format.js
  • [x] Update test/unit/date/format-properties.js
• [x] Functional tests
  • [x] Update test/functional/date/format-date.js
  • [x] move from test/functional/date/format-date.js into formatDateToParts and dateToPartsFormatter.
• [x] Runtime code
  • [x] Update src/date-runtime.js
• [x] Documentation
  • [x] Update doc/api/date/date-to-parts-formatter.md
• [x] Examples
  • [x] Update examples/amd-bower
  • [x] Update examples/app-npm-webpack
  • [x] globalize-webpack-plugin update
  • [x] use dateToParts
  • [x] Update examples/globalize-compiler
  • [x] Update examples/node-npm
  • [x] Update examples/plain-javascript
  • [x] Requires compiler upgrade https://github.com/globalizejs/globalize-compiler/pull/24

[jsf-clabot]

All committers have signed the CLA.

[rxaviers]

@jzaefferer thanks for your review