drop support for node 11,13

[jaapbakker88]

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Size Change: +124 B (0%)

Total Size: 182 kB

Filename	Size	Change
dist/browser.es.js	39.1 kB	+32 B (0%)
dist/browser.js	39.3 kB	+29 B (0%)
dist/index.es.js	39.1 kB	+31 B (0%)
dist/index.js	39.3 kB	+32 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
dist/browser.full-bundle.min.js	25.3 kB	0 B

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