fix: block conversion issues

[vvidday]

Proposed solutions for #27 and #29

For #27, Block.vue::clearSearch previously wouldn't trigger on a single slash since the slash was not added to searchTerm. Also changed <= 1 to <1 to support single character search terms (e.g. /h)

For #29 please see issue

27

 

29

 

[vvidday]

regarding the last commit, here's a gif showing the content of selectedNode in getCaretPos:

when it's a single character it returns the parent node instead of the text node, so selectedNode is wrong and results in the wrong offset.