Switching to `recollect.twig/deftwig`

Turned out we don't need an extra recollect.macros namespace. Now the macro is under recollect.twig as render-twig.

Ignore changes of arguments in deftwig

This change enables trick of bypass re-rendering of grabbing some data. It's a trick for performance purpose.

eliminate changes for same keyword

Fix

• (identical? :x :x) returns false during development, need to use (= :x :x) for detecting equality

don't emit changes for same sets

Fix

• previously [#{} #{}] is generated for same sets

Refactor to unify the concept of Twig

Refactor

• all stuffs are called twig now, no more using bunch
• render-bunch changed to render-twig
• diff-bunch changed to diff-twig
• patch-bunch changed to patch-twig

Feature

• new macro called deftwig to simplify usage

Update protocol for performance

Refactor

• now the protocol is like [operation coord data], where operation is a number, coord is a vector. Should be faster to transfer.
• slightly changed patching code.