updated version number on develop
added post processing code to observations to allow them to calculate properly.  This removes the top level operator and puts it onto the population criteria.  It also pulls out any logic based preconditions since we are trying to calculate a value that is numeric not a boolean
fixed from js method on subset operator to handle types correctly.
updated parser to provide access to fields in addition to id
Merge remote-tracking branch 'origin/develop' into scoop-develop

Signed-off-by: Jeremy Ho <jujaga@gmail.com>