Heuristic callbacks
Docs and example for heuristic
Clarification over solver capabilities
Added extension capability, for robust split
Merge pull request #109 from JuliaOpt/extensions

Added extension capability, for robust split (and maybe NLP + stochastic too)
Make constraints parametric
Update docs to reflect wiping behaviour
Merge master into heurcb
Merge pull request #110 from JuliaOpt/paraconstraint

Make constraints parametric
fix moving expression printing target
clean SOS commit
Merge pull request #112 from JuliaOpt/sos2

clean SOS commit
Add stuff to NEWS, close #111
Further paramaterize LinConstraint stuff
use parameter in JuMPDict abstract type
Merge branch 'master' of github.com:JuliaOpt/JuMP.jl
Fix nasty bug with JuMPDict printing
Merge branch 'master' of https://github.com/JuliaOpt/JuMP.jl
Type updates for functions, test wrapped in function