Add @since to most JSDoc comments

- See jasmine/jasmine.github.io#117

src/core/matchers/toBe.js

@@ -3,6 +3,7 @@ getJasmineRequireObj().toBe = function(j$) {
    * {@link expect} the actual value to be `===` to the expected value.
    * @function
    * @name matchers#toBe
+   * @since 1.3.0
    * @param {Object} expected - The expected value to compare against.
    * @example
    * expect(thing).toBe(realThing);