Provide custom frame filtering options

[yaahc]

closes #25

[yaahc]

build failing because stable isn't available, nice :)

I did not touch the formatting stuff, it should be ready for you to add the fancy pre/post frame filtering though

[athre0z]

Thanks for the great PR. I really didn't have to change a lot!

For the spacers, I tried different things and thought that it would be cool to go with the zig-zag look that GitHub does when it truncates an enormously long issue:

That's what it looks like with my current glyph selection in iTerm:

I think it's okay, but I'll look into other glyphs.

Alternatively, with the glyph I originally proposed:

[yaahc]

I'm not sure if it just takes some getting used but rn I think I prefer the second option

[athre0z]

Yeah, I'd go with the second one of those two as well. There's a quite significant lack of unicode characters for displaying medium height wavy/zigzag horizontal lines. I found two more options:

〰

iTerm

Gnome Term

ᨓ

None of them is really just perfect. I'd say we go either with the second option in this post or the simple ⋮ from the previous post.

[yaahc]

Sounds good, I agree with you that the second option here also looks pretty good but I don't have a strong preference.

[athre0z]

Alright, I just went with the somewhat more conservative ⋮ for now. I'll test out some more options and maybe make it configurable & launch a Twitter poll for the default later, but don't want to block this any longer. Additionally, I migrated the CI to GH Actions, which seems to be working fine.

Did I forget anything? From my side of things, this should be ready to merge.

[yaahc]

Nope, I think this ones good for me, also if you can make a release with this once it's merged I would be eternally grateful.

[athre0z]

I'll do a release tomorrow, after doing some additional testing. I want to make sure that no off-by-ones wre introduced -- having the wrong frames hidden would be a really major PITA for everyone trying to debug their app using the lib.