changes when updating to 2.x in Material-UI

[eps1lon]

Describe the bug

• plugins needed to be re-ordered to remove empty <g /> resulting from removeUselessStrokeAndFill (specifically removeUselessStrokeAndFill has to come before removeEmptyContainers
  Edit: Setting multipass to true does not require re-ordering. Did the default change?
• Some paths have the following diff:

  -0-1.41l-2.83-2.83a.9959.9959 0 00-1.41
  +0-1.41l-2.83-2.83a.9959.9959 0 0 0-1.41

  This diff has no visible changes (search for accessalarm (with rounded selected) when using 1.3.2 vs 2.1.0)

To Reproduce
Update svgo to 2.1 and resolve documented breaking changes

Expected behavior
Unclear whether this is intended or not.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• SVGO Version: 2.1.0 (was 1.3.2)
• NodeJs Version 12.20.0 (and 10.24.0
• OS: Ubuntu 20.04.2 LTS

Additional context
mui/material-ui#25122

[TrySound]

Some paths have the following diff. This diff has no visible changes

Not a bug. See #1353

plugins needed to be re-ordered to remove empty resulting from removeUselessStrokeAndFill (specifically removeUselessStrokeAndFill has to come before removeEmptyContainers

Might be related to series of fixes which prevents some optimisations in favour of correctness

Please tell if you'll notice any visual regressions.

[eps1lon]

Automated diffing did not spot any visual changes. If you don't consider the required multipass: true as a regression, feel free to close the issue.

[TrySound]

Thanks! Hope soon multipass will not be necessary.