The program is intended to download mediafiles from any mediathek. It's name is derived from tools like youtube-dl (downloads videos from youtube), arte-dl (downloads videos from ARTE-TV mediathek, zdf-dl (downloads videos from ZDF mediathek), dctp-dl and some other tools. Because this tool is intended to be general / generic, it got his name: intended to allow downloads from ANY mediathek.
So many changes, bug-fixes and enhancements during the updates from year 2014 to 2015, that not all is mentioned here.
There is a lot of information in the git-repo (see commit-messages).
But one nice feature is the tagselect-command,
which allows extracting html-content based on DOM-description.
If picking one certain tag and atrribute is necessary, this is easily done now.
...if you want to be very close to the current / up_to-date release, you can follow me on github. you can look at github here for any-dl.