latest should be a supported dependency version string

[msluther]

See this code:

feedsme/lib/feedsme/index.js

Line 328 in fc7ae7a

if (rootRange === 'latest') rootRange = '*';

It isn't being apply everywhere in the code, specifically I noticed it missing here:

feedsme/lib/feedsme/index.js

Line 136 in fc7ae7a

const rootPkgRange = pkg.dependencies[releaseLine.pkg];

meaning that release-lines are potentially messed up for dependencies with latest instead of *.

Workaround: use * instead.