Revert "lazier computed properties – don't bother watching"

This commit is something we want long term, but at the moment it has some
unintended side effects that we need to fix first.

This reverts commit cc4af51d94336e7764e0ebfc88a0f87d4e627278.
Merge pull request #2077 from akshayrawat/master

Update contributing links for jsfiddle and jsbin
Merge pull request #2068 from andyhmltn/master

Edit to README.md concerning computer properties
Merge pull request #2076 from mhelabs/fix-zero-as-attr-value

Allow 0 as the value of a tag
[Fixes: #2049] Missing docs
Merge pull request #2078 from stefanpenner/fix_docs

[Fixes: #2049] Missing docs
Update README.md
Upgrade to Handlebars 1.0.0-rc.3
Add a handlebars example to the template helper documentation
Fix rake deploy tasks
Version bump - 1.0.0-rc.1
Look up namespaces by their names
Fix Handlebars version regexp - Fix #2083
Add support for /-separated namespace lookup

The default resolver hook now supports names
like "controller:foo/bar", which resolves to
Foo.BarController, assuming Foo is a registered
namespace.
Upgrade vendored handlebars.js to 1.0.0-rc.3
Update JSBin and JSFiddle links for RC
Merge pull request #2085 from omghax/update-vendored-handlebars

Upgrade vendored handlebars.js to 1.0.0-rc.3
Update Gem dependencies
Merge pull request #2080 from yoinup/template-helper-doc

Add a handlebars example to the template helper documentation
Guard against render(undefined)

render(undefined) was doing absolutely horrible things. I found this
problem because I passed an undefined variable as the first argument.
This ended up changing containers on controllers and doing other
absolutely horrible things.