v0.3.0

DisjunctiveProgramming v0.3.0

Diff since v0.2.1

Closed issues:

• Allow user to have already created the disjunction binary variable before calling the disjunction macro (#24)
• Add fixed cost parameter in disjunction (#31)
• Only disaggregate variables involved in disjunction constraints (Hull reformulation) (#44)
• Upcoming refactoring of JuMP's nonlinear API (#47)
• new constraints output for nonlinear models (#49)

Merged pull requests:

• Use more restrictive JuMP compat bounds (#48) (@odow)
• Nonlinear (#50) (@hdavid16)