Add support for sort by boolean

tpl/collections/sort_test.go

@@ -218,6 +218,9 @@ func TestSort(t *testing.T) {
 				map[interface{}]interface{}{"Title": "Foo", "Weight": 10},
 			},
 		},
+		// test boolean values
+		{[]bool{false, true, false}, "value", "asc", []bool{false, false, true}},
+		{[]bool{false, true, false}, "value", "desc", []bool{true, false, false}},
 		// test error cases
 		{(*[]TstX)(nil), nil, "asc", false},
 		{TstX{A: "a", B: "b"}, nil, "asc", false},

tpl/compare/compare.go

@@ -252,6 +252,11 @@ func (ns *Namespace) compareGet(a interface{}, b interface{}) (float64, float64)
 		case timeType:
 			left = float64(toTimeUnix(av))
 		}
+	case reflect.Bool:
+		left = 0
+		if av.Bool() {
+			left = 1
+		}
 	}
 
 	bv := reflect.ValueOf(b)
@@ -275,6 +280,11 @@ func (ns *Namespace) compareGet(a interface{}, b interface{}) (float64, float64)
 		case timeType:
 			right = float64(toTimeUnix(bv))
 		}
+	case reflect.Bool:
+		right = 0
+		if bv.Bool() {
+			right = 1
+		}
 	}
 
 	if ns.caseInsensitive && leftStr != nil && rightStr != nil {