Added cell() and element() twig functions

[othercorey]

#22

[othercorey]

I wonder if it is safe to cache the TwigEnvironment instance in a static variable so Cell's don't create new ones for every render.

[ADmad]

I wonder if it is safe to cache the TwigEnvironment instance in a static variable so Cell's don't create new ones for every render.

I think it should be.

[othercorey]

Twig Environment instance is now cached. If we want to test creating new Environment instances later, we will need to add a way to clear it.

oops

[ADmad]

The readme needs to be updated with new function usage examples.

[othercorey]

I was going to re-write it once we've finished our cleanup since we keep adding/changing new functions. Is that ok?

[ADmad]

I think @codeCoverageIgnore should be added to the node and parser classes for element and cell to avoid the coverage drop.

[othercorey]

I think @codeCoverageIgnore should be added the node and parser classes for element and cell to avoid the coverage drop.

I was thinking about adding a single deprecation notice to each and adding a unit test that verify deprecation warning for the element tag.

I don't know if we want to spam warnings while people transition though.

[ADmad]

I don't know if we want to spam warnings while people transition though.

Yeah that doesn't sound too nice. I am leaning towards just documenting the deprecations.

[othercorey]

I added a unit test to cover the deprecated tags and all of the node code.