Essentially less will no longer require calc() calls to be wrapped in ~'', and back-ticks (for inline javascript) are no longer enabled by default. Luckily we've barely ever used either of these features it seems.
This is, however, technically a breaking change, so we'll have to go to version 0.11.
https://trello.com/c/HpJyMuZK/97-upgrade-to-less-3
Less 2 is no longer maintained and has vulnerabilities: https://github.com/less/less.js/issues/3204 Breaking changes are sort of mentioned here: https://github.com/less/less-docs/issues/462#issuecomment-440548796
Essentially less will no longer require
calc()calls to be wrapped in~'', and back-ticks (for inline javascript) are no longer enabled by default. Luckily we've barely ever used either of these features it seems.This is, however, technically a breaking change, so we'll have to go to version
0.11.