[astalwick]

We switched from underscore to lodash several months ago, and haven't regretted it. The fact that lodash follows semver is huge. Underscore has introduced serious breaking changes in minor point-releases more than once, which is completely unacceptable for a utility library.

[untog]

Semver isn't a requirement nor be-all-end-all, though.

[cmpb]

It is, however, amazingly convenient and capable of saving a lot of time in bug fixes.

[coldtea]

Isn't what's a "requirement" something that THEY get to decide for their code base?