TorneLIBv6 is the first package release that's been made public from its initial release, in the form of a composer bundle. All modules delivered with TorneLIB can be separately installed.
There are no official releases of prior versions and they are obsolete due to their uselessness, and no longer supported. TorneLIB is currently maintained as PHP only, but other release packages (.NET) might be built in the future.
This is the landing page that handles anything you need to know about this library.
TorneLIB was in the beginning built as a big library that "fixed all dirty jobs for you". This was a time before I was familiar with Zend framework, Laravel, etc. The new versions of TorneLIB is therefore not as big as the prior versions. There are things that could be made better somewhere else. For TorneLIB I've ben focusing on simplicity instead of complexity. I like frameworks and systems that do not require a whole bunch of configuration before starting.
TorneLIB is put on packagist and all you need to install the libraries or the modules is composer. However, downloading the source may be done in several ways.