UMD output seems to be working well for the storage module; this change
adjusts the web-targeted build outputs of this module to use it as well.
Also, common output properties are now specified in the base config and
removed from each individual config.
This informs webpack (say, in `scratch-gui`) about the web-targeted
build output so that it can resolve dependencies correctly. This fixes
build problems that became evident after merging #805.
* Move drums into their own folder
* Load instrument samples
* Play notes
* Concurrency limit is shared across drums and instruments
* Increase MIDI note range
* Set instrument directly on musicState object
* JSDoc
* Clean up the play note functions and add comments
* Cleanup
* Check for audioEngine in playDrumNum
* JSDoc and comments
* Round the instrument number
* Fix unit test for set instrument
* Comment fixes
* Nit (condense onto single line)
Build a page with webpack that loads a project and automatically runs
it, collecting performance information for a set amount of time,
stopping and displaying the results.
* Cache Block Inputs & Procedure Definitions
* @mzgoddard requested changes on this pull request
* Move all caching into a single reusable field _cache.
* Invalidate 'all' caches on any change.
* Use 'typeof' instead of hasOwnProperty.
* Take caching out of Block and use lookup instead.
Before: `_removeThread` stops a thread and immediately removes it from
the runtime's thread array. If this happens while iterating over the
thread array, such as in the case of clone deletion, some elements of
the array can be missed.
After: `_removeThread` has been renamed to `_stopThread`. It still stops
the thread immediately but it no longer removes the thread from the
runtime's thread array. Instead, `_stopThread` marks the thread for
later removal. Such threads are removed at the top of the next `_step`.
return false from isActiveThread if thread's status is done even when
its contained in the runtime threads list. As it is done, the thread
will not be run until either its replaced by a new copy of the thread
or the thread is removed from the list and another is added at a later
time.
