Add getLine to get line by index

[jhrcek]

WIP - implementing #5
It's a bit more labor intensive than I initially anticipated, so opening draft for potential early feedback.

TODO:

• add getLine for TextLines
• add getLine to Rope(s)
• add getRange for TextLines
• add getRange for Rope(s)

[jhrcek]

Hello @Bodigrim ,
can I get some preliminary feedback on the first of the functions I intended to implement when you have some time to spare?
I'll get to the Range variant in the next few days..

[Bodigrim]

I think monospace font would look better, more prominent:

Suggested change

	-- Returns "" if the index is out of bounds.
	-- Returns @""@ if the index is out of bounds.

[Bodigrim]

Overall makes sense to me, thanks for working on it.

[jhrcek]

Thanks for review.
I'll still implement the getRange helper and try to test out the new functions in hls before marking it as ready to merge.

[Bodigrim]

@jhrcek how is it going? Any plans for further progress?
I plan to make a release sooner than later, so it would be great to merge your work once complete.

[jhrcek]

Hello @Bodigrim
I saw you today at ZuriHac. I'll try to catch you tomorrow in person and we can discuss the next steps. I'd like to gather some more feedback from other HLS devs to see if it's the right direction and we could potentially merge this.

[Bodigrim]

@jhrcek sure, let's catch up tomorrow. Or today if it still works for you.

[michaelpj]

Looks good to me.

[Bodigrim]

Thanks a lot @jhrcek!

[Bodigrim]

@jhrcek the repo is in ready-for-release state now, waiting for you to green-light that it fits HLS needs.