Respond to @psibi's comments

Author: MaxGabriel

.github/ISSUE_TEMPLATE.md

@@ -25,5 +25,5 @@ command -v yesod && yesod version
 
 ### Support
 
-Please direct support questions to [Stack Overflow](https://stackoverflow.com/questions/tagged/yesod) or the [Yesod Google Group](https://groups.google.com/forum/#!forum/yesodweb). If you don't get a response there, or you suspect there may be a bug in Yesod causing your problem, you're welcome to ask here.
+Please direct support questions to [Stack Overflow](https://stackoverflow.com/questions/tagged/yesod+haskell) or the [Yesod Google Group](https://groups.google.com/forum/#!forum/yesodweb). If you don't get a response there, or you suspect there may be a bug in Yesod causing your problem, you're welcome to ask here.
 -->

CONTRIBUTING.md

@@ -70,20 +70,21 @@ Examples are recommended, but not required, in documentation. Marking new APIs w
 
 ### Versioning
 
-Yesod packages roughly follow the Haskell Package Versioning Policy style of MAJOR.MAJOR.MINOR.PATCH
+Yesod packages roughly follow the Haskell Package Versioning Policy style of A.B.C.[D] (MAJOR.MAJOR.MINOR.[PATCH])
 
-* MAJOR - Used for massive changes in the library
-* MAJOR - Used for smaller breaking changes, like removing, renaming, or changing behavior of existing public API.
-* MINOR - Used for new public APIs
-* PATCH - Used for bug fixes
+* A - Used for massive changes in the library. (Example: 1.2.3.4 becomes 2.0.0)
+* B - Used for smaller breaking changes, like removing, renaming, or changing behavior of existing public API. (Example: 1.2.3.4 becomes 1.3.0)
+* C - Used for new public APIs (Example: 1.2.3.4 becomes 1.2.4)
+* D - Used for bug fixes (Example: 1.2.3.4 becomes 1.2.3.5).
+	* D is optional in the version number, so 2.0.0 is a valid version.
 
 Documentation changes don't require a new version.
 
 If you feel there is ambiguity to a change (e.g. fixing a bug in a function, when people may be relying on the old broken behavior), you can ask in an issue or pull request.
 
 Unlike in the Package Versioning Policy, deprecations are not counted as MAJOR changes.
 
-In some cases, dropping compatibility with a major version of a dependency (e.g. changing from transformers >= 0.3 to transformers >= 0.4), is considered a MAJOR breaking change.
+In some cases, dropping compatibility with a major version of a dependency (e.g. changing from transformers >= 0.3 to transformers >= 0.4), is considered a breaking change.
 
 ### Changelog