Fix a bug where the editor layout could remain confused after a call to
refresh when line wrapping was enabled.
dialog addon: Don’t close dialogs when the document window loses focus.
merge addon: Compensate for editor top position when aligning lines.
vim bindings: Improve EOL handling.
emacs bindings: Include default keymap as a fallback.
julia mode: Fix an infinite loop bug.
show-hint addon: Scroll cursor into view when picking a completion.
screenReaderLabel to add a label to the editor.
New mode: wast.