resolve version with one dot

This enhancement allow to use single dot version like `0.8` or `0.10`

If the script detect it is a single dot version, it will resolve it to find the higher version available, so here  `0.8.25` and `0.10.12`

It use the same logic as `display_remote_versions`, so it's 0.8.6 minimum

It allows to quickly switch/install to the latest version of a "branch"