[gegl] (18 commits) Created branch meta-json

[Jon Nordby <jonnor src gnome org>]

The branch 'meta-json' was created.

Summary of new commits:

  7900b22... meta-json: Add initial GeglOperationMetaJson baseclass
  3fd315e... meta-json: Add initial json operation module
  aebd7ac... meta-json: Add to build, depend on glib-json
  d93f6b9... meta-json: Add initial test subgraph
  67faed2... meta-json: Add initial test case
  4f502d2... meta-json: Can set up initial proper
  a5a42c0... meta-json: Can instantiate nodes
  7da609c... meta-json: Can connect nodes of subgraph
  bf1bc22... meta-json: Can redirect properties
  ecb41fb... meta-json: Can set initial properties from file
  562faf9... meta-json: Add a trivial testcase
  3893559... meta-json: Can forward property changes
  4a3f0f2... meta-json: Follow normal module paths for loading
  e815e46... meta-json: Also support GeglColor properties
  405c13f... meta-json: Lookup operation name+description properly
  3a8fc93... meta-json: Fix sensible warnings
  52dcb15... meta-json: Remove debug prints
  aed6865... meta-json: Enable test composition