pre.740

What's Changed

• Add FAQ by @porotkin in #2241
• MUI. Full style customization support via components' classes [generated] by @aerialist7 in #2240
• Adjust inital FAQ info by @porotkin in #2243
• MUI. Cleanup & sync [generated] by @aerialist7 in #2244

Full Changelog: pre.739...pre.740