versioning

Describe the bug

refreshVersions is not able to find the latest versions of artifact in local maven repository.

To Reproduce

1. Publish any project/library that uses maven-publish plugin to local maven repository, e.g. via ./gradlew publishToMavenLocal
2. Use it as a dependency in another project with refreshVersions, specifying the local repository via `repositories {

When trying out Niv and following the example from the readme to add GHC:

$ niv add ghc   \
    -v 8.4.3    \
    -t 'https://downloads.haskell.org/~ghc/<version>/ghc-<version>-i386-deb8-linux.tar.xz'

But instead using the latest ghc version (9.0.1 as of writing), I get the following error:

$ niv add ghc -v 9.0.1 -t 'https://downloads.haskell.org/~ghc/<version>/ghc-<versi

The idea is to navigate and have commands similar to a shell: https://news.ycombinator.com/item?id=31173562

We encountered this on an internal deployment, but wanted to post a related bug report here for tracking.

We were trying to deploy to a tag that was "broken" (still not entirely sure what that means), and got the response

$ curl --request POST \
       --header "Docat-Api-Key: $TOKEN" \
       --form "file=@site.zip" \
       "http://www.mydocat.com/api/myproj/brokentag"

<!DOCTYP

As we don't particularly need RxJS in semver (no retry, only one value emitted) RxJS can be a barrier for new contributors because not everyone is familiar with RxJS.

A bunch of functions used in semver return an Observable and we should migrate to Promise, no need to refactor the whole project in one commit we can refactor one function by one making sure tests still pass.

This is a good