repairs and extensions

This release fixes getting YouTube video info by updating YoutubeExplode to latest version.

That made a breaking change in the SubTubular API necessary - i.e. changing the -l or --latest parameter to -t or --top because YoutubeExplode v6 does not return the uploaded date for the videos in a playlist any longer, making the original functionality hard to implement efficiently.

Additionally, it adds new features for outputting the search results as either a text or HTML file containing hyperlinks.

"works on my machine"

...which is a 64bit Windows. Let me know how the UX is on your end in the issues.