VM improvements, tests + bugfixes (#61)

* changed vm commands to match more of the standard

* fixed Uint16 jmp bug in VM

* moved test to vm + fixed numnotequal bug

* fixed broken tests

* moved compiler tests to vm tests

* added basic for support + inc and dec stmts

* bumped version

pkg/vm/test/array_test.go

@@ -0,0 +1,117 @@
+package vm_test
+
+import (
+	"math/big"
+
+	"github.com/CityOfZion/neo-go/pkg/vm"
+)
+
+var arrayTestCases = []testCase{
+	{
+		"assign int array",
+		`
+		package foo
+		func Main() []int {
+			x := []int{1, 2, 3}
+			return x
+		}
+		`,
+		[]vm.StackItem{
+			vm.NewBigIntegerItem(1),
+			vm.NewBigIntegerItem(2),
+			vm.NewBigIntegerItem(3),
+		},
+	},
+	{
+		"assign string array",
+		`
+		package foo
+		func Main() []string {
+			x := []string{"foo", "bar", "foobar"}
+			return x
+		}
+		`,
+		[]vm.StackItem{
+			vm.NewByteArrayItem([]byte("foo")),
+			vm.NewByteArrayItem([]byte("bar")),
+			vm.NewByteArrayItem([]byte("foobar")),
+		},
+	},
+	{
+		"array item assign",
+		`
+		package foo
+		func Main() int {
+			x := []int{0, 1, 2}
+			y := x[0]
+			return y
+		}
+		`,
+		big.NewInt(0),
+	},
+	{
+		"array item return",
+		`
+		package foo
+		func Main() int {
+			x := []int{0, 1, 2}
+			return x[1]
+		}
+		`,
+		big.NewInt(1),
+	},
+	{
+		"array item in bin expr",
+		`
+		package foo
+		func Main() int {
+			x := []int{0, 1, 2}
+			return x[1] + 10
+		}
+		`,
+		big.NewInt(11),
+	},
+	{
+		"array item ident",
+		`
+		package foo
+		func Main() int {
+			x := 1
+			y := []int{0, 1, 2}
+			return y[x]
+		}
+		`,
+		big.NewInt(1),
+	},
+	{
+		"array item index with binExpr",
+		`
+		package foo
+		func Main() int {
+			x := 1
+			y := []int{0, 1, 2}
+			return y[x + 1]
+		}
+		`,
+		big.NewInt(2),
+	},
+	{
+		"array item struct",
+		`
+		package foo
+
+		type Bar struct {
+			arr []int
+		}
+
+		func Main() int {
+			b := Bar{
+				arr: []int{0, 1, 2},
+			}
+			x := b.arr[2]
+			return x + 2
+		}
+		`,
+		big.NewInt(4),
+	},
+}