Bump clean-css from 4.2.3 to 5.1.0

[dependabot-preview[bot]]

Bumps clean-css from 4.2.3 to 5.1.0.

Changelog

Sourced from clean-css's changelog.

5.1.0 / 2021-02-18

• Fixes stripping '%' from inside color functions.
• Improves tokenization speed by ~30%.
• Fixed issue #1143 - some missing level 1 value optimizations.

5.0.1 / 2021-01-29

• Fixed issue #1139 - overriding & merging properties without canOverride set.

5.0.0 / 2021-01-29

• Adds a way process input files without bundling it into one big output file.
• Adds level 1 and level 2 optimization plugins.
• Disables URL rebasing by default.
• Disables URL unquoting by default.
• Drops support for Node.js 6 & 8 to support last 3 Node.js releases: 10, 12, and 14.
• Fixed issue #889 - whitelisted level 1 optimizations.
• Fixed issue #975 - incorrect block name optimization.
• Fixed issue #1009 - whitespace around comments.
• Fixed issue #1021 - allow one- and two-letter property names.
• Fixed issue #1022 - merging into shorthands new property positioning.
• Fixed issue #1032 - wrong order of merged shorthands with inherit.
• Fixed issue #1043 - calc fallback removed within other function.
• Fixed issue #1045 - non-standard protocol-less URL first slash removed.
• Fixed issue #1050 - correctly keeps default animation duration if delay is also set.
• Fixed issue #1053 - treats calc() as first class width value.
• Fixed issue #1055 - supports 4- and 8-character hex with alpha color notation.
• Fixed issue #1057 - level 2 optimizations and quoted font family name.
• Fixed issue #1059 - animation time units as CSS expressions.
• Fixed issue #1060 - variable removed when shorthand's only value.
• Fixed issue #1062 - wrong optimization of CSS pseudo-classes with selector list.
• Fixed issue #1073 - adds support for non-standard rpx units.
• Fixed issue #1075 - media merging and variables.
• Fixed issue #1087 - allow units with any case.
• Fixed issue #1088 - building source maps with source preserved via comments.
• Fixed issue #1090 - edge case in merging for border and border-image.
• Fixed issue #1103 - don't allow merging longhand into unset shorthand.
• Fixed issue #1115 - incorrect multiplex longhand into shorthand merging.
• Fixed issue #1117 - don't change zero values inside min, max, and clamp functions.
• Fixed issue #1122 - don't wrap data URI in single quotes.
• Fixed issue #1125 - quotes stripped from withing @supports clause.
• Fixed issue #1128 - take variables into account when reordering properties.
• Fixed issue #1132 - vendor-prefixed classes inside :not().
• Reworks all level 1 optimizations to conform to plugin style.

Commits

• 5f4fe15 Version 5.1.0.
• 12d16d5 Fixes #1143 - some missing level 1 value optimizations.
• a0e61fe Adds bootstrap v5 as a test fixture.
• d9ab4b4 Fixes stripping '%' from inside color functions.
• 10422a3 Add CodeQL Action
• 91c88ba Switch to GitHub Action CI for Linux and Windows builds
• 9422451 module-test: fix wrong escape characters
• b0a8574 tokenize: remove redundant length calls
• 6297655 Improves tokenization speed by further ~10%.
• 6d8c725 Improves tokenization speed by ~20%.
• Additional commits viewable in compare view

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Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot rebase.

[dependabot-preview[bot]]

Superseded by #213.