Rename connector attributes

[formatc1702]

Closes #77.

PR is built on top of #102. May be reviewed before or after.
[Update: #102 is merged now]

[formatc1702]

@kvid do you have any objections to this change?
Please don't feel pressured. My main thought is wanting to integrate this change soon so that any new changes can build on the new attribute names, which should take care of potentially ugly merge conflicts :)

[kvid]

I have no objections at this tme, but have not had the time to read all the changes. The overall impression is good, but some of the changes are time consuming to verify, if done properly. I will not complain if you merge now. It is still possible to raise a new issue if I find something later. You decide, or maybe someone else can approve more quickly.

[formatc1702]

All the relevant changes are in a1881eb and super straightforward.
The additional diff lines stem from the fact that I added #78 on top since it wasn't merged at that point, and the rest is just example rebuilding.
[Update]
Changed commit ref after rebasing, the comments re. #78 are irrelevant now. Hopefully everything went smoothly :)