feat(email): add simplified email address format

Author: mefellows

src/dsl/matchers.spec.ts

@@ -377,6 +377,8 @@ describe("Matcher", () => {
     describe("when given a valid Email address", () => {
       it("creates a valid matcher", () => {
         expect(email("hello@world.com")).to.be.an("object")
+        expect(email("hello@world.com.au")).to.be.an("object")
+        expect(email("hello@a.co")).to.be.an("object")
         expect(email()).to.be.an("object")
       })
     })

src/dsl/matchers.ts

@@ -10,8 +10,7 @@ import MatcherError from "../errors/matcherError"
 // Note: The following regexes are Ruby formatted,
 // so attempting to parse as JS without modification is probably not going to work as intended!
 /* tslint:disable:max-line-length */
-export const EMAIL_FORMAT =
-  "^[a-z0-9!#$%&'*+\\/=?^_‘{|}~-]+(?:\\.[a-z0-9!#$%&'*+\\/=?^_‘{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$"
+export const EMAIL_FORMAT = "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$"
 export const ISO8601_DATE_FORMAT =
   "^([\\+-]?\\d{4}(?!\\d{2}\\b))((-?)((0[1-9]|1[0-2])(\\3([12]\\d|0[1-9]|3[01]))?|W([0-4]\\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\\d|[12]\\d{2}|3([0-5]\\d|6[1-6])))?)$"
 export const ISO8601_DATETIME_FORMAT =