Fixed release and versions.
Updated dependencies.
Refactoring for Blaze.
Removed all constant sections.
Updated packages.
Updated accounts.

We have to use event.originalEvent to pass custom flags between event
handlers, because flags do not persist across event objects directly.
Also template events do not work properly for setting those flags in
the first place, so opening dropdowns and dialogs do not work yet
correctly.
Removed spaceless for now.
Renaming Deps to Tracker and other simplifications.