Avoid blank line at end of view

[stefanhaller]

• PR Description

This updates gocui to include jesseduffield/gocui#68 and jesseduffield/gocui#69, which changes views to not have an extra blank line at the end when content ending in a newline character is written to them. This makes text views more consistent with list views, which don't have a blank line after the last list entry either.

[jesseduffield]

LGTM. Feel free to merge after bumping gocui

[stefanhaller]

I had to add a commit to adapt some tests, and to change the behavior of the WrapViewLinesToWidth function accordingly; I forgot this the first time around. Since this affects the logic of the staging view, I'm going to run with this version for a bit more locally before merging to see if anything got broken by the change.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for 13829d81	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (13829d8)	Report Missing	Report Missing	Report Missing
Head commit (ae53059)	51622	44616	86.43%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#4152)	6	6	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[stefanhaller]

I tested this a bit more and didn't find any problems, so I'm going to merge.