feat(PointerEvents): using PointerEvents instead of Mouse/TouchEvents

[pimdewit]

#6

• Replaced Mouse/TouchEvents events with PointerEvents
• removed normalizeEvent utility method (now redundant)
• updated docstrings, removed NormalisedPointerEvent type definition

TODO:

• Find a way to use pointer events in the current testing setup; tests fail because simulant does not recognise PointerEvents

[coveralls]

Pull Request Test Coverage Report for Build 67

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 114 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-14.5%) to 76.402%

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Files with Coverage Reduction	New Missed Lines	%
dist/macro-carousel-test.js	114	76.4%

Totals
Change from base Build 62:	-14.5%
Covered Lines:	440
Relevant Lines:	562

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💛 - Coveralls

[ciampo]

I remember writing tests for that part (and using simulant), it was quite tricky.

Also, if we go for native pointer events, we will need to add the polyfill (given the browser support) at least to the demos. And write documentation about it

[ciampo]

The refactor looks good, but I can't approve this PR without:

• working tests
• PointerEvents polyfill in the demo (and a note added to the docs)