Using isVersionSupported() instead of plain comparison.

It is more descriptive and easier to fix/modify when it is in one place.

src/Context.cpp

@@ -182,7 +182,7 @@ Context::Context() {
         Version::None
     };
     size_t future = 0;
-    while(versions[future] != Version::None && versions[future] < _version)
+    while(versions[future] != Version::None && !isVersionSupported(_version))
         ++future;
 
     /* List of extensions from future versions (extensions from current and

src/Context.h

@@ -235,7 +235,7 @@ class MAGNUM_EXPORT Context {
          * @see isExtensionSupported(const Extension&) const
          */
         template<class T> inline bool isExtensionSupported() const {
-            return _version >= T::coreVersion() || (_version >= T::requiredVersion() && extensionStatus[T::Index]);
+            return isVersionSupported(T::coreVersion()) || (isVersionSupported(T::requiredVersion()) && extensionStatus[T::Index]);
         }
 
         /**
@@ -248,7 +248,7 @@ class MAGNUM_EXPORT Context {
          * @see supportedExtensions(), Extension::extensions()
          */
         inline bool isExtensionSupported(const Extension& extension) const {
-            return _version >= extension._coreVersion || (_version >= extension._requiredVersion && extensionStatus[extension._index]);
+            return isVersionSupported(extension._coreVersion) || (isVersionSupported(extension._requiredVersion) && extensionStatus[extension._index]);
         }
 
         #ifndef DOXYGEN_GENERATING_OUTPUT