Blobbogram: omit PE if out of range
Resolve merge conflict
Experiment with rcppbugs
Minimum diameter spanning tree in R
Minor changes (minumum diameter spanning tree)
Merge branch 'develop' of https://github.com/gertvv/mtc into develop

* 'develop' of https://github.com/gertvv/mtc:
  Minor changes (minumum diameter spanning tree)
  Minimum diameter spanning tree in R
  Experiment with rcppbugs
  Blobbogram: omit PE if out of range
Standardize treatments table (issue #630)
Standardize study and treatment IDs (fixed #630)

 - also minor fix to minimum.diameter.spanning.tree
Implement plot.mtc.network in R (issue #628)
Graphs and trees working again (issue #628)
WIP code generation in R (issue #628)
Full model generation in R, but buggy (issue #628)
Bugfix in forgotten file (issue #628)
depend igraph >= 0.6.4

	* 0.6.3 appears incompatible with rjags
Build verification suite from examples
Fix typos
Preserve names for vertices (issue #628)
Use R implemenation by default (issue #628)

 - For consistency models only
Bugfixes, all examples now verify (issue #628)
Fix prior discrepancy binom.logit (issue #628)