Merge branch 'release/2.1.0' into dev
Add Symfony ClassLoader (needed for bootstrap)
Add a `build_bootstrap` script.

Generates `mustache.php`, a single-file bootstrap library which is a lot easier to include in your project.
Add LambdaHelper and Logger to build_bootstrap.
Merge branch 'feature/bootstrap' into dev
Improve Mustache exception types, catchability.

 * Subclass common exception types (runtime, logic, invalid argument).
 * Add new "unknown x" exceptions for filters, helpers and templates.
 * Make all Mustache exceptions implement Mustache_Exception interface… Gotta catch 'em all!
Add test coverage for new exception types.
Merge branch 'feature/catchable-exceptions' into dev
Bail early on log formatting if message has no placeholders.
Link to main docs more prominently
mention UnknownTemplateException in loader interface
Remove unnecessary @implements annotations.
Add an inline template loader.

This loader is awesome for micro-frameworks such as Silex :)
Add a CascadingLoader implementation.
Update Lambda Helper docblock. It was a lie.
Update src/Mustache/Engine.php
Merge remote-tracking branch 'rothshahar/patch-1' into dev
Don't instantiate a LambdaHelper for classes with no Lambdas :)
Remove unused `escape` param from `renderInternal`
Add `resolveValue` method to base Template.

DRYs up compiled class output a bit and makes things FASTER!

Speeds up value resolution by 33% for primitives, 25% for methods and properties, and 10% for lambdas.