Making it possible to order observation updates by their depth automatically

#155

QUNIT2 upgrade

This updates the tests to use QUnit@2.x.x.

#146

IE 11 Compatibility

Fix the tests for IE11

v4.1.0

• Add a value property getter #135
• Add compatibility with how webpack builds for production #133
• Add "use strict" #134

v4.0.1

Cleanup markdown sample code #126

4 DOT OH!

#116

• no longer needs CID (uses new Map())
• stateful parts are pulled out into can-observation-recorder
• new Observation() works find on its own.

Updated docs and added cycle detection

• Remove all prerelease package refs #111
• Add a cycle detection script to test process #115
• Update docs with new @parent & @collection #119
• Hide docs that can’t show up in the navigation #120

v3.3.5...v3.3.6

Revert 3.3.4

Reverts https://github.com/canjs/can-observation/releases/tag/v3.3.4

separating observability from proactive cacheability

#109

Use `canLog` Instead of `console`

This is to prevent errors when console is not present such as in IE 9 when the dev tools have not been opened.