make the core/router.AllMethods a variable that can be changed by end-devs as requested at: https://github.com/kataras/iris/issues/1102

Former-commit-id: 47c997e0d3a90e4c7ccb8c4dfd1459065490d59e

HISTORY.md

@@ -22,10 +22,16 @@ Developers are not forced to upgrade if they don't really need it. Upgrade whene
 ## Breaking changes
 
 - Remove the "Configurator" `WithoutVersionChecker` and the configuration field `DisableVersionChecker`
-- `:int` (or its new alias `:number`) macro route path parameter type **can accept negative numbers now**. Recommendation: `:int` should be replaced with the more generic numeric parameter type `:int` if possible (although it will stay for backwards-compatibility)
+- `:int` parameter type **can accept negative numbers now**.
+- `app.Macros().String/Int/Uint64/Path...RegisterFunc` should be replaced to: `app.Macros().Get("string" or "int" or "uint64" or "path" when "path" is the ":path" parameter type).RegisterFunc`, because you can now add custom macros and parameter types as well, see [here](_examples/routing/macros).
+- `RegisterFunc("min", func(paramValue string) bool {...})` should be replaced to `RegisterFunc("min", func(paramValue <T>) bool {...})`, the `paramValue` argument is now stored in the exact type the macro's type evaluator inits it, i.e `uint64` or `int` and so on, therefore you don't have to convert the parameter value each time (this should make your handlers with macro functions activated even faster now) 
 
 ## Routing
 
+The `github.com/kataras/iris/core/router.AllMethods` is now a variable that can be altered by end-developers, so things like `app.Any` can register to custom methods as well, as requested at: https://github.com/kataras/iris/issues/1102. For example, import that package and do `router.AllMethods = append(router.AllMethods, "LINK")` in your `main` or `init` function.
+
+The old `github.com/kataras/iris/core/router/macro` package was moved to `guthub.com/kataras/iris/macro` to allow end-developers to add custom parameter types and macros, it supports all go standard types by default as you will see below.
+
 - `:int` parameter type as an alias to the old `:int` which can accept any numeric path segment now, both negative and positive numbers
 - Add `:int8` parameter type and `ctx.Params().GetInt8`
 - Add `:int16` parameter type and `ctx.Params().GetInt16`

core/router/api_builder.go

@@ -12,17 +12,15 @@ import (
 	"github.com/kataras/iris/macro"
 )
 
-const (
-	// MethodNone is a Virtual method
-	// to store the "offline" routes.
-	MethodNone = "NONE"
-)
+// MethodNone is a Virtual method
+// to store the "offline" routes.
+const MethodNone = "NONE"
 
 var (
 	// AllMethods contains the valid http methods:
 	// "GET", "POST", "PUT", "DELETE", "CONNECT", "HEAD",
 	// "PATCH", "OPTIONS", "TRACE".
-	AllMethods = [...]string{
+	AllMethods = []string{
 		"GET",
 		"POST",
 		"PUT",