Is the "Marzipano Tool" available for download?

[Marvin The Martian]

Hi --

I've modified the Marzipano for myself as surely many did:

Added target(yaw, pitch, zoom) as needed for any other paths than linear&one-directional ones; as well as vary the label of hyperlinks for more or less the same reason (because just like view angle, label should depend on where you come from, e.g. "to the top" vs "to the valley" can point to the same location).

Added crosshairs and a box showing current yaw, pitch, zoom etc (to help adjusting existing positions and target-yaw/pitch, or insert new hotspots).

I've sometimes added a new location to an existing tour:

Now I have to either completely redo the tour from memory, then do the manual alterations (see first paragraph); or make a two-image 'tour' (new image plus a dummy to hyperlink towards), to get at least coordinates of new hotspots easily, plus the tiles --- but the naming is very annoying (it's a second 'image-0') and hence inserting.

Now, what would make my life easier would be a modified Marzipano Tool that 

(a) reads in existing tours --- so no need to redo a whole tour when inserting a new location,

(b) deals with my added features --- e.g. preview "target pitch+yaw" for hyperlinks

When looking on Github I don't see it; I see a few half-hearted, mostly solo, attempts at replicating the Tool. Would it be possible to be made available on request or so?

All the best,

M