Add primal_start and dual_start for constraints to make v1.2 (#22)

Author: odow

README.md

@@ -5,7 +5,7 @@ called _MathOptFormat_ with the file extension `.mof.json`.
 
 MathOptFormat is rigidly defined by the [JSON schema](http://json-schema.org/)
 available at
-[`https://jump.dev/MathOptFormat/schemas/mof.1.1.schema.json`](https://jump.dev/MathOptFormat/schemas/mof.1.1.schema.json).
+[`https://jump.dev/MathOptFormat/schemas/mof.1.2.schema.json`](https://jump.dev/MathOptFormat/schemas/mof.1.2.schema.json).
 
 It is intended for the schema to be self-documenting. Instead of modifying or
 adding to this documentation, clarifying edits should be made to the
@@ -67,7 +67,7 @@ Encoded into the MathOptFormat file format, this example becomes:
 {
  "version": {
  "major": 1,
- "minor": 1
+ "minor": 2
  },
  "variables": [{"name": "x"}],
  "objective": {

examples/milp.mof.json

@@ -2,7 +2,7 @@
  "description": "The problem: min{x | x + y >= 1, x ∈ [0, 1], y ∈ {0, 1}}",
  "version": {
  "major": 1,
- "minor": 1
+ "minor": 2
  },
  "variables": [{
  "name": "x",
@@ -36,7 +36,9 @@
  "set": {
  "type": "GreaterThan",
  "lower": 1
- }
+ },
+ "primal_start": 1,
+ "dual_start": 0
  }, {
  "name": "x ∈ [0, 1]",
  "function": {

examples/vector.mof.json

@@ -2,7 +2,7 @@
  "description": "The problem: min{0 | [1 2; 3 4][x, y] + [5, 6] ∈ R+.",
  "version": {
  "major": 1,
- "minor": 1
+ "minor": 2
  },
  "variables": [{
  "name": "x"
@@ -45,6 +45,8 @@
  "set": {
  "type": "Nonnegatives",
  "dimension": 2
- }
+ },
+ "primal_start": [5, 6],
+ "dual_start": [0, 0]
  }]
 }

python/mof.py

@@ -3,7 +3,7 @@
 import os
 
 
-SCHEMA_FILENAME = '../schemas/mof.1.1.schema.json'
+SCHEMA_FILENAME = '../schemas/mof.1.2.schema.json'
 
 def validate(filename):
  with open(filename, 'r', encoding='utf-8') as io: