Change signal option support info

[igoradamenko]

Hello!

Chrome released signal in v88: https://www.chromestatus.com/feature/5658622220566528 Firefox released it in v86: https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/86#apis

[codecov[bot]]

Codecov Report

Merging #38 (3f81986) into master (a37993c) will decrease coverage by 6.26%. The diff coverage is n/a.

:exclamation: Current head 3f81986 differs from pull request most recent head 80e8648. Consider uploading reports for the commit 80e8648 to get more accurate results

@@            Coverage Diff             @@
##           master      #38      +/-   ##
==========================================
- Coverage   98.09%   91.82%   -6.27%     
==========================================
  Files          13       13              
  Lines         367      367              
  Branches       87       87              
==========================================
- Hits          360      337      -23     
- Misses          1       15      +14     
- Partials        6       15       +9     

Impacted Files	Coverage Δ
src/lib/error-handler.ts	76.47% <0.00%> (-23.53%)	:arrow_down:
src/lib/event-wrapper.ts	80.59% <0.00%> (-19.41%)	:arrow_down:
src/lib/dom-exception.ts	75.00% <0.00%> (-10.00%)	:arrow_down:
src/lib/event.ts	97.14% <0.00%> (-2.86%)	:arrow_down:
src/lib/event-target.ts	94.31% <0.00%> (-2.28%)	:arrow_down:

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[igoradamenko]

Merging #38 (3f81986) into master (a37993c) will decrease coverage by 6.26%.