…oard-events

Fix ff substitute keyboard events

…n blur

add resetCursorOnBlur option.

Without this invalidation, a previous request to set selection can
cause focus to move back to a mathquill after it has already been moved
somewhere else.

…imeout-on-blur

Blur invalidates request to update selection.

Useful in conjunction with overrideKeystroke.

…-keystroke

Allow passing an event to keystroke.

This fixes a prayer bug where I wasn't resetting the cursor.parent back to the root

add cursor.resetToEnd() method

fix scroll with selection

base class is overriding ctrlseq for subclass "textit" and others

…ldern

fix latex for textit command

Add mathspeak to inequality symbols

…igation

Known issue that the entirety of the text block is read aloud when pressing Delete.

Text command improvements

Add verbal support for reading and navigating nthroots

Interpret → as \to when it is pasted in

* Call updateMathspeak from the primary setAriaLabel() method if the active Mathquill element does not have focus (this was previously called in textarea, but wouldn't necessarily fire if an outsider was setting the label via the public API).
* Add the colon symbol only when computing an aria-label + mathspeak for the active Mathquill-- should restore previously expected behavior.

…used

Also updates tests.

…dering

Consolidate ARIA label update code and use hidden span for static math

…update

Short-circuit efficient latex update if old and new values are identical

jQuery 3.x has introduced a bunch of different focus bugs in the process
of attempting to migrate to using native focus events in more cases,
some of which remain unfixed in the latest version (3.6.0).

Examples:
* jquery/jquery#4859
* jquery/jquery#4856
* jquery/jquery#4950
* jquery/jquery#4867

Some unknown bug in this general class can make it so that Mathquill
public api focus calls stop working because using jQuery to
programatically trigger focus breaks.

Work around this by switching to triggering native focus events instead
of jQuery focus events.

Use native focus events insted of jQuery focus events

Fixes mathquill#950 by reverting
mathquill#764 and
mathquill#779

Unfortunately, this leaves us back in a place where superscript and
subscript placement isn't very good when they're attached to tall
blocks, but I think if we're going to fix that, we need to find a way
to do it that's more robust to continuing to edit the expression.

Allow running CI with either CircleCI or Jenkins

Remove unreferenced air-demo