Fix typo in JqEvent#isPropagationStopped

Fixes spelling and aligns JqEvent method name with jQuery event object method name.
sidestep DCE feature definition issue
fixed issue with compiler cache and Context.defineType
added @:dce to force dce even in "std" mode. have it work on abstract implementation as well
fixed issue with "macro class" reification + display mode
make sure window is not escaped in JQuery (closes #2139)
This should certainly be a function call.
Fix all usages of untyped window.

...In the standard library at least. We're probably going to see some
third party library breakage when #2139 goes out. No pain, no gain I
guess?
allow dollar names for fields while parsing, but fail during typing (closes #1838)
reverse index features while typing, check during DCE
check for Array/Math specifically when checking features on JS
Merge pull request #2126 from duncanbeevers/development

Fix typo in JqEvent#isPropagationStopped
Allow Dispatch to be subclassed

Basically the macros only allow arguments of known types, either simple
types (String, Int, Float, Bool) or objects - the only allowed objects
were instances of sys.db.Object subclasses or haxe.web.Dispatch instances.

This patch also allows arguments that are a sub class of haxe.web.Dispatch.

It also makes redirect() public so that the Redirect exception can be
caught by a subclass
Merge pull request #2144 from jasononeil/feature/allowdispatchsubclass

Allow Dispatch to be subclassed
output which argument is being processed when an invalid class name is encountered (closes #2145)
fix bogus error message for enum constructors with argument errors (closes #2148)
fixed issue #2146
Merge branch 'development' of github.com:HaxeFoundation/haxe into development
optimized out (function()... == null) and != null (can occur when inlining optional methods)
check for casts of first argument to static extension (closes #2152)