Update: December 5th
Unfortunately 10.1.2 introduced a small bug with frustrating consequences. We have released version 10.1.3 to address this. This is a very minor release that fixes bug #2180, which was causing the selection to expand when indenting or un-indenting. This bug was introduced in 10.1.2 due to the fix for bug #900 and we felt it significant enough to prioritize a quick update that addresses this issue.