Remove polyfills for not supported browsers

[sequba]

Description

• Configured Babel to polyfill only the UMD build. Supported browsers according to our documentation
• Remove non-standard TerserPlugin configuration (no longer needed since we don't use the gpujs anymore)
• Configured Webpack to exclude all dependencies in hyperformula.min.js build
• Removed regenerator-runtime from dependencies. Moved core-js to devDependencies.
• Mentioned supported Node.js versions in the Supported browsers guide
• Instruct users to include all the required dependencies when using non-full UMD build

Browserslist configuration:

    "maintained node versions",
    "last 2 chrome versions",
    "last 2 and_chr versions",
    "last 2 firefox versions",
    "last 2 and_ff versions",
    "last 2 safari versions",
    "last 2 ios_saf versions",
    "last 2 edge versions",
    "last 2 and_uc versions",
    "last 2 and_qq versions",
    "last 2 op_mob versions"

Build sizes [kb]:

File/dir	develop	feature/issue-1011
dist/hyperformula.min.js	1728	516
dist/hyperformula.full.min.js	2048	812
es/	2443	1494
commonjs/	2515	1596

How has this been tested?

Test all builds:

• ES Module
  • [x] in a browser, through a bundler - verified in react-demo and vanillajs-demo (parcel)
  • [x] in Node
  • [x] ~~directly in a browser~~ (seems to be neither possible nor supported)
• CommonJS
  • [x] in a browser, through a bundler - verified in react-demo and vanillajs-demo (parcel)
  • [x] in Node
• UMD (dist)
  • [x] directly in a browser - verified in locally-run vanillajs-demo and hyperformula.full.min.js file hosted using temporary jsdelivr link (https://cdn.jsdelivr.net/gh/handsontable/hyperformula@feature/issue-1011-jsdelivr-experiment/dist/hyperformula.full.min.js)

Types of changes

• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] New feature or improvement (non-breaking change which adds functionality)
• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] Additional language file or change to the existing one (translations)
• [ ] Change to the documentation

Related issues:

Fixes #1011 https://github.com/handsontable/hyperformula/issues/1006 https://github.com/handsontable/hyperformula/issues/896

Checklist:

• [x] My code follows the code style of this project.
• [x] I described the modification in the CHANGELOG.md file.
• [ ] My change requires a change to the documentation.
• [ ] My change requires a migration guide.

[sequba]

@warpech I analyzed the Babel's output generated for this set of browsers:

    "maintained node versions",
    "last 2 chrome versions",
    "last 2 and_chr versions",
    "last 2 firefox versions",
    "last 2 and_ff versions",
    "last 2 safari versions",
    "last 2 ios_saf versions",
    "last 2 edge versions",
    "last 2 and_uc versions",
    "last 2 and_qq versions",
    "last 2 op_mob versions"

It seems that we have polyfills for some of the ES2015 features but not all of them. I'm guessing that some of the browsers listed above have only partial support for ES2015.

I spotted the polyfills for:

• destructuring arrays as function parameters

• default parameters

• rest operator in function parameters

There are also vast blocks of code (>2k lines) generated that also seem to contain some polyfills, but it's not easy to deduce what exactly they polyfill.

The comparison of the UMDs with and without polyfills: https://github.com/handsontable/hyperformula/compare/bf899a361d35f18c1632df4604ee0e727694b5ac...feature/issue-1011-compare-polyfills?diff=split

If we want to reduce the number of polyfills, we can drop support for some of the browsers. I can figure out which browsers from the list generate the most of the polyfills.

[sequba]

@warpech Please assign a dev from HOT team to review this PR

[github-actions[bot]]

Performance comparison of head (caa1c5299ba8077004711da8362c232cb2fbdc43) vs base (2805b59951cde624ec02df4e78359e797e592867)

                                     testName |  base |  head |  change
-----------------------------------------------------------------------
                                      Sheet A | 463.9 | 467.9 |  +0.86%
                                      Sheet B | 200.1 | 202.8 |  +1.35%
                                      Sheet T | 254.3 | 255.2 |  +0.35%
                                Column ranges | 551.9 | 553.6 |  +0.31%
Sheet A:  change value, add/remove row/column |    36 |    35 |  -2.78%
 Sheet B: change value, add/remove row/column |   279 |   284 |  +1.79%
                   Column ranges - add column |   247 |   184 | -25.51%
                Column ranges - without batch |   640 |   625 |  -2.34%
                        Column ranges - batch |   150 |   128 | -14.67%

[codecov[bot]]

Codecov Report

Merging #1030 (caa1c52) into develop (2805b59) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1030   +/-   ##
========================================
  Coverage    95.74%   95.74%           
========================================
  Files          161      161           
  Lines        14098    14098           
  Branches      2977     2977           
========================================
  Hits         13498    13498           
  Misses         584      584           
  Partials        16       16