Bump less from 2.7.3 to 3.0.4

[dependabot-preview]

Bumps less from 2.7.3 to 3.0.4.

Changelog

Sourced from less's changelog.

3.0.0

2018-02-10

• Fix calc() function to not do math operations on compile
• Rename Directive -> AtRule & Rule -> Declaration
• Cross-platform [**plugin**](https://github.com/plugin) loading! (Node & Browser)
• Numerous changes / improvements to plugin architecture
• Simplified API calls in plugins (less.atrule() vs new less.tree.AtRule())
• Property accessors ($width to refer to width: 300px value)
• Inline JavaScript disabled by default for security reasons (use [**plugin**](https://github.com/plugin))
• Improvements in Less error reporting
• Added feature: returning null / false from Less functions will remove that line
• Simple boolean() and if() functions added
• Bug fixes
• Removal of unnecessary nodes from API (like IE's alpha())

Commits

• See full diff in compare view

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