Use caret ^ dependencies instead of tilde ~ dependencies

I hope this may fix some problems with sourcemaps, by allowing to update
convert-source-map.

The decision to use ~ was explicit, and there was even a test in the
code which prevented the use of ^, added in ddfa437e34.
The rationale in 73689c7fc8 is:

    ^ operator in package.json is unnecessary and unfriendly to users

I disagree with that; let's hope I'm not wrong about that!

CHANGES.md

@@ -1,3 +1,6 @@
+## v1.6.0 2017-05-28
+ * Switch from tilde ~ dependencies to ^ caret dependencies.
+
 ## v1.5.0 2017-04-29
  * Support `export var varName = function($scope) { "ngInject"; }`.
  * Support `/* @ngInject */ export [default] var varName = function [functionName]() {...}`.

package.json

@@ -8,23 +8,23 @@
     "url": "https://github.com/bluetech/ng-annotate-patched.git"
   },
   "dependencies": {
-    "acorn": "~5.0.3",
-    "alter": "~0.2.0",
-    "convert-source-map": "~1.1.2",
-    "optimist": "~0.6.1",
-    "simple-fmt": "~0.1.0",
-    "simple-is": "~0.2.0",
-    "source-map": "~0.5.3",
-    "stable": "~0.1.5",
-    "stringmap": "~0.2.2",
-    "stringset": "~0.2.1",
-    "tryor": "~0.1.2"
+    "acorn": "^5.0.3",
+    "alter": "^0.2.0",
+    "convert-source-map": "^1.1.2",
+    "optimist": "^0.6.1",
+    "simple-fmt": "^0.1.0",
+    "simple-is": "^0.2.0",
+    "source-map": "^0.5.3",
+    "stable": "^0.1.5",
+    "stringmap": "^0.2.2",
+    "stringset": "^0.2.1",
+    "tryor": "^0.1.2"
   },
   "devDependencies": {
-    "coffee-script": "~1.10.0",
-    "defs": "~1.1.1",
-    "diff": "~2.2.1",
-    "find-line-column": "~0.5.2"
+    "coffee-script": "^1.10.0",
+    "defs": "^1.1.1",
+    "diff": "^2.2.1",
+    "find-line-column": "^0.5.2"
   },
   "keywords": [
     "angular",

run-tests.js

@@ -163,25 +163,6 @@ function run(ngAnnotate) {
     test(adf, ngAnnotate(adfAnnotated, {remove: true, plugin: [ngAnnotateAdfPlugin]}).src, "optionals/angular-dashboard-framework.js");
 
 
-    if (fs.existsSync("package.json")) {
-        console.log("testing package.json")
-        try {
-            const json = JSON.parse(slurp("package.json"));
-            const substr = JSON.stringify({
-                dependencies: json.dependencies,
-                devDependencies: json.devDependencies,
-            }, null, 4);
-            if (/\^/g.test(substr)) {
-                console.error("package.json error: shouldn't use the ^ operator");
-                console.error(substr);
-                process.exit(-1);
-            }
-        } catch (e) {
-            console.error("package.json error: invalid json");
-            process.exit(-1);
-        }
-    }
-
     if (fs.existsSync("tests/angular.js")) {
         console.log("testing performance");
         const ng1 = String(fs.readFileSync("tests/angular.js"));