Revert "Added spaces as an invisible"

Fixes #1145

This reverts commit 8cea97aecaabe2dbee64c9c5b8b1a9181076b291.

Conflicts:
	Frameworks/layout/src/paragraph.cc
Add Go → Go to Tab → Last Tab (⌘0)

Closes #1150
Test if io::spawn fails
Disable wrapping for NSTextView

Unfortunately this doesn’t cause the container to get the proper width, but in most cases this is probably preferred over having the content wrap.
Catch potential exceptions from loading Cap’n Proto data files

Might fix #1134
Abort if unable to reload document

This should be handled better, but previously we would crash due to filling the stack, so better to just immediately abort when we detect the problem, so that we get a better crash report and can see how widespread the issue is.
Change text::range_t → ng::range_t
Improve “replace input” command output for column selections

The output will be inserted corresponding to the subsets selected on each line.

If the output has less lines than the column selection then the additional selected lines are cleared.

If the output has more lines than the column selection then the additional output lines are dropped.