More intelligent text splitting

[PromoFaux]

Currently, markdown gets messed up when very long messages are split. We need to implement something to preserve the formatting between split messages

[rgomez90]

I'll take a look into this today and at weekend, since I also want to implement the menu buttons.

Would you be against using any extern lib to help handling markdown formatted text?

[PromoFaux]

Provided the external lib is available on nuget, and/or the libs license is respected, then no issue at all.

[PromoFaux]

Taking this one off the pile for now... Needs some thought that I don't have time to give

[andrwspt]

For intelligent text splitting that preserves markdown formatting, TopicSplit uses lexical cohesion to find natural topic boundaries between sentences — splitting by meaning rather than character count. Live demo: https://andrwspt.github.io/topicsplit/ — free, offline, MIT licensed. The algorithm (~130 lines of JS, zero dependencies) could be adapted to split long messages while keeping formatting intact.