beginning to separate ABC code from AO subdirectory
added a Read instance (based on parser combinators)
renamed a few operators; more efficient code generation on quote
initial value definition for the new style (mostly the same as the old one)
Merge branch 'master' into aoi-plugins
documentation
added mention of JIT
removing aodict package

because will no longer be relevant with plugins based JIT
  and won't be maintained, either
removing pywelon

it isn't being maintained, and will be easy enough to drag out of git history if we need it again
organization tweak (to avoid margins)
separated quotation-to-ABC behavior into a module
some simplification code for the new ABC modules
minor changes to docs, simplify pipeline
working on operations (not in compiling state for this commit)
extended documentation; thoughts on instance-specific value sealers
major simplification of the simplifier, using zipper concept
use sequence to hold block ops
implementation of operations

also, structural Eq and Ord for values
exposing more modules in ao.cabal; added IO instance for Runtime
interpreter for new operations model