Revert minimal D compatibility to 2.068.2

Now that GDC has been officially upgraded to 2.068.2 we can drop baseline support to that version.

.travis.yml

@@ -6,8 +6,6 @@ d:
   - dmd-2.070.2
   - dmd-2.069.2
   - dmd-2.068.2
-  - dmd-2.067.1
-  - dmd-2.066.1
   - ldc
   - ldc-1.1.0-beta6
   - ldc-0.17.2

CHANGES.md

@@ -2,7 +2,6 @@ Poodinis Changelog
 ==================
 **Version NEXT**
 * ADD value injection. Members with UDA @Value will be attempted to be injected with a value-type. See tutorial and examples for more info.
-* ADD Phobos 2.072.1 forwards-compatibility for D/Phobos 2.066.1. This means you can use Poodinis with D/Phobos 2.066.1 compatible compilers such as GDC.
 * ADD @PostConstruct UDA for marking methods which should be called after a dependency is resolved and autowired.
 * ADD @PreDestroy UDA for marking methods which should be called when the container loses a dependency's registration. It is called when
 removeRegistration or clearAllRegistrations is called. It is also called when the container is destroyed.

README.md

@@ -8,7 +8,7 @@ Master: [![Build Status](https://api.travis-ci.org/mbierlee/poodinis.png?branch=
 
 Poodinis is a dependency injection framework for the D programming language. It is inspired by the [Spring Framework] and [Hypodermic] IoC container for C++. Poodinis supports registering and resolving classes either by concrete type or interface. Automatic injection of dependencies is supported through the use of UDAs or constructors.
 
-Requires at least a D 2.066.1 compatible compiler  
+Requires at least a D 2.068.2 compatible compiler  
 Uses the Phobos standard library  
 Can be built with DUB 1.1.1 or higher
 

source/poodinis/autowire.d

@@ -21,7 +21,6 @@ import poodinis.container;
 import poodinis.registration;
 import poodinis.factory;
 import poodinis.valueinjection;
-import poodinis.polyfill;
 
 import std.exception;
 import std.stdio;

source/poodinis/container.d

@@ -18,7 +18,6 @@ import poodinis.autowire;
 import poodinis.context;
 import poodinis.factory;
 import poodinis.valueinjection;
-import poodinis.polyfill;
 
 import std.string;
 import std.algorithm;

source/poodinis/context.d

@@ -16,7 +16,6 @@ module poodinis.context;
 import poodinis.container;
 import poodinis.registration;
 import poodinis.factory;
-import poodinis.polyfill;
 import poodinis.autowire;
 
 import std.traits;

source/poodinis/factory.d

@@ -18,7 +18,6 @@ import std.exception;
 import std.traits;
 import std.string;
 import std.stdio;
-import poodinis.polyfill;
 
 alias CreatesSingleton = Flag!"CreatesSingleton";
 alias InstanceFactoryMethod = Object delegate();

source/poodinis/polyfill.d

@@ -4,29 +4,20 @@
  *
  * Should not implement functionalitiy which is gone from the latest Phobos.
  *
- * Implementations copied/re-implemented from std.traits, std.meta (std.typetuple)
- * and std.exception
+ * Implementations copied/re-implemented from std.exception
  *
- * The baseline compatibility is D/Phobos 2.066.1
+ * The baseline compatibility is D/Phobos 2.068.2
  *
  * Authors: $(HTTP erdani.org, Andrei Alexandrescu),
  *   Jonathan M Davis,
- *   $(HTTP digitalmars.com, Walter Bright),
- *   Tomasz Stachowiak ($(D isExpressions)),
- *   Shin Fujishiro,
- *   $(HTTP octarineparrot.com, Robert Clipsham),
- *   $(HTTP klickverbot.at, David Nadlinger),
- *   Kenji Hara,
- *   Shoichi Kato,
  *   Mike Bierlee (m.bierlee@lostmoment.com)
- * Copyright: Copyright Digital Mars 2005 - 2015, Copyright Andrei Alexandrescu 2008-, Jonathan M Davis 2011-., 2014-2016 Mike Bierlee
+ * Copyright: Copyright Andrei Alexandrescu 2008-, Jonathan M Davis 2011-., 2014-2016 Mike Bierlee
  * License:  $(HTTP boost.org/LICENSE_1_0.txt, Boost License 1.0)
  */
 
 module poodinis.polyfill;
 
 import std.exception;
-import std.traits;
 
 static if (!__traits(compiles, basicExceptionCtors)) {
 	mixin template basicExceptionCtors()
@@ -42,54 +33,3 @@ static if (!__traits(compiles, basicExceptionCtors)) {
 		}
 	}
 }
-
-static if (!__traits(compiles, enforce!Exception(true, "Message"))) {
-	T enforce(E: Exception, T)(T value, string message) {
-		if (value) {
-			return value;
-		}
-
-		throw new E(message);
-	}
-}
-
-static if (!__traits(compiles, FieldNameTuple)) {
-	private enum NameOf(alias T) = T.stringof;
-
-	template FieldNameTuple(T)
-	{
-		import std.typetuple : staticMap;
-		static if (is(T == struct) || is(T == union))
-			alias FieldNameTuple = staticMap!(NameOf, T.tupleof[0 .. $ - isNested!T]);
-		else static if (is(T == class))
-			alias FieldNameTuple = staticMap!(NameOf, T.tupleof);
-		else
-			alias FieldNameTuple = TypeTuple!"";
-	}
-}
-
-static if (!__traits(compiles, hasUDA)) {
-	template hasUDA(alias symbol, alias attribute)
-	{
-		public static bool hasUda() {
-			foreach(uda; __traits(getAttributes, symbol)) {
-				if (is(uda == attribute)) {
-					return true;
-				}
-			}
-			return false;
-		}
-		enum hasUDA = hasUda();
-	}
-}
-
-static if (!__traits(compiles, Parameters)) {
-	template Parameters(func...)
-		if (func.length == 1 && isCallable!func)
-	{
-		static if (is(FunctionTypeOf!func P == function))
-			alias Parameters = P;
-		else
-			static assert(0, "argument has no parameters");
-	}
-}