Should not upgrade from gulp 3 to gulp 4

[TwitchBronBron]

Greenkeeper tried to upgrade gulp 3 to gulp 4 in one of my projects (https://github.com/TwitchBronBron/MessageManager/pull/1/files#diff-b9cfc7f2cdf78a7f4b91a753d10865a2R21).

The problem is, gulp 4 has a few major breaking changes compared to gulp 3, so almost every v3 gulpfile needs to be rewritten to support the new gulp 4 syntax.

Is this something that greenkeeper should restrict (i.e. only ever upgrade gulp 3 to higher gulp 3 versions, same with gulp 4), or are greenkeeper users expected to fix all CI build failures before merging the greenkeeper pull requests?

[GregTheGreek]

@TwitchBronBron did you ever solve this?

[TwitchBronBron]

@GregTheGreek, I haven't heard anything from the greenkeeper team, and I gave up using greenkeeper because I found it to be more effort than it was worth for me. So, no?