Re-write DateNumbers

Fixes #25.

Microsoft/DateNumbers.yml

@@ -3,5 +3,38 @@ message: "Don't use ordinal numbers for dates."
 link: https://docs.microsoft.com/en-us/style-guide/numbers#numbers-in-dates
 level: error
 nonword: true
+ignorecase: true
+raw:
+  - \b(?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)|May|Jun(?:e)|Jul(?:y)|Aug(?:ust)|Sep(?:tember)?|Oct(?:ober)|Nov(?:ember)?|Dec(?:ember)?)\b\s*
 tokens:
-  - '(?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)|May|Jun(?:e)|Jul(?:y)|Aug(?:ust)|Sep(?:tember)?|Oct(?:ober)|Nov(?:ember)?|Dec(?:ember)?) [a-z-]+\b'
+  - first
+  - second
+  - third
+  - fourth
+  - fifth
+  - sixth
+  - seventh
+  - eighth
+  - ninth
+  - tenth
+  - eleventh
+  - twelfth
+  - thirteenth
+  - fourteenth
+  - fifteenth
+  - sixteenth
+  - seventeenth
+  - eighteenth
+  - nineteenth
+  - twentieth
+  - twenty-first
+  - twenty-second
+  - twenty-third
+  - twenty-fourth
+  - twenty-fifth
+  - twenty-sixth
+  - twenty-seventh
+  - twenty-eighth
+  - twenty-ninth
+  - thirtieth
+  - thirty-first

features/rules.feature

@@ -119,8 +119,9 @@ Feature: Rules
     Then the output should contain exactly:
       """
       test.md:3:6:Microsoft.DateFormat:Use 'July 31, 2016' format, not '12 Mar 2016'.
-      test.md:5:18:Microsoft.DateNumbers:Don't use ordinal numbers for dates.
+      test.md:5:16:Microsoft.DateNumbers:Don't use ordinal numbers for dates.
       test.md:7:14:Microsoft.DateOrder:Always spell out the name of the month.
+      test.md:13:7:Microsoft.DateNumbers:Don't use ordinal numbers for dates.
       """
 
   Scenario: Use of punctuation

fixtures/DateFormat/test.md

@@ -2,8 +2,12 @@
 
 It's 12 Mar 2016. This is okay: 15 and 2017
 
-It happenened on October twenty-eighth.
+It happened on October twenty-eighth.
 
 For example, 6/12/2017 might be June 12, 2017 or December 6, 2017.
 
 Users may see the following behavior.
+
+The project started in May of 2013.
+
+Is it June first?