Merge pull request #3636 from bradleypriest/render

Render docs typos
Changelog renamed to .md, initial changes
Changed all releases to headings
[DOC] Add defeatureify to instructions.

[ci skip]
Removed duplicate entry
Merge pull request #3642 from knownasilya/changelog-md

CHANGELOG converted to Markdown
Merge pull request #3641 from rjackson/update_build_instructions

[DOC] Add defeatureify to instructions.
fix link to handlebars helper
Merge pull request #3645 from shime/patch-1

fix link to handlebars helper
Merge pull request #3609 from hjdivad/fix-3607

[BUGFIX beta] reduceComputed ignore changes during reset.
Add test for Function.prototype.property.
Function.prototype methods should be undefined.
Fixed small typo
Merge pull request #3653 from intuitivepixel/master

Fixed small typo
Made the session variable lowercase.
Merge pull request #3654 from MajorBreakfast/master

Made the session variable lowercase.
Removed nullified duplicate entries in features.json
["BUGFIX" beta] Improve unhandled action error messages

1) The comment about `return true` being a possible source of error
   is incorrect; even if an action handler returns true, the action
   is considered handled and it won't cause an error even if parent
   routes don't handle the event.
2) 99% of the time, the only time people see the error about no
   active handlers is when they try to call `Route#send` within
   `model`, `beforeModel`, or `afterModel`. Most likely the solution
   is to call `Transition#send` on the transition object passed into
   the various model hooks, so I've updated the error message
   to suggest using `Transition#send` instead.
Merge pull request #3575 from xtian/static-segment-precedence

Give precedence to routes with more static segments. Fixes #3573
[BUGFIX beta] sync router.js

- Sync router.js
- Don't fire `error` actions on transitions that have already been
  aborted/redirected
- Closes #3162