* changes: SideBySide2: Chunk and comment padding cleanup SideBySide2: Fix scrolling alignment errors and reduce jank SideBySide2: Fix starting focus on B side instance Add simple test for LineMapper.appendReplace
* changes: SideBySide2: Chunk and comment padding cleanup SideBySide2: Fix scrolling alignment errors and reduce jank SideBySide2: Fix starting focus on B side instance Add simple test for LineMapper.appendReplace