Update to w3c standard

[lukasoppermann]

This fixes #229 and #200

• [x] add standard deprecated to dropdown selection
• [x] fix test
• [x] examples for style dictionary conversion (parser, etc.)
• [x] manually test standard and standard deprecated
• [x] update value to $value
• [x] update type to $type
• [x] update description to $description
• [x] update extensions to $extensions
• [x] check tokens
  • [x] typography
  • [x] duration
  • [x] size
  • [x] color
  • [x] ...
• [ ] add w3c transition
• [ ] add w3c typography
• [ ] add deprecated to custom formats
• [ ] change values to w3c valid values

[coveralls]

Pull Request Test Coverage Report for Build 4428142244

• 12 of 104 (11.54%) changed or added relevant lines in 9 files are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-18.2%) to 63.281%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/utilities/convertColor.ts	0	1	0.0%
src/transformer/tokenExtensions.ts	0	2	0.0%
src/utilities/prepareExport.ts	0	2	0.0%
src/extractor/extractFonts.ts	7	10	70.0%
src/transformer/standardTransformerV1.deprecated.ts	0	13	0.0%
src/transformer/TokenTransformer.ts	0	21	0.0%
src/transformer/standardTransformerV2.ts	0	50	0.0%
<!--	Total:	12	104	11.54%	-->

Files with Coverage Reduction	New Missed Lines	%
src/transformer/tokenExtensions.ts	1	0%
src/utilities/convertColor.ts	1	87.5%
<!--	Total:	2		-->

Totals
Change from base Build 3017694185:	-18.2%
Covered Lines:	488
Relevant Lines:	742

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💛 - Coveralls