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diff --git a/src/core/ManagedContainers.hpp b/src/core/ManagedContainers.hpp
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--- a/src/core/ManagedContainers.hpp
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@@ -1,384 +0,0 @@
-/*
-    Ousía
-    Copyright (C) 2014, 2015  Benjamin Paaßen, Andreas Stöckel
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _OUSIA_MANAGED_CONTAINERS_H_
-#define _OUSIA_MANAGED_CONTAINERS_H_
-
-#include "Managed.hpp"
-
-namespace ousia {
-
-/**
- * Template class which can be used to collect "Owned" refrences to a certain
- * type of managed object. Do not use this class directly, use ManagedMap or
- * ManagedVector instead. This class only provides functionality which is common
- * to list and map containers (iterators and state).
- *
- * @param T is the type of the Managed object that should be managed.
- * @param Collection should be a STL container of Owned<T>
- */
-template <class T, class Collection>
-class ManagedContainer {
-public:
-	using collection_type = Collection;
-	using value_type = typename collection_type::value_type;
-	using reference = typename collection_type::reference;
-	using const_reference = typename collection_type::const_reference;
-	using iterator = typename collection_type::iterator;
-	using const_iterator = typename collection_type::const_iterator;
-	using size_type = typename collection_type::size_type;
-
-protected:
-	/**
-	 * Handle containing a reference to the owner of the collection.
-	 */
-	Handle<Managed> owner;
-
-	/**
-	 * Underlying STL collection.
-	 */
-	collection_type c;
-
-protected:
-	/**
-	 * Function which can be overridden by child classes to execute special code
-	 * whenever a new element is added to the collection.
-	 */
-	virtual void addElement(value_type h) {}
-
-	/**
-	 * Function which can be overriden by child classes to execute special code
-	 * whenever an element is removed from the collection.
-	 */
-	virtual void deleteElement(value_type h) {}
-
-public:
-	/**
-	 * Constructor of the ManagedContainer class.
-	 *
-	 * @param owner is the managed object which owns the collection and all
-	 * handles to other managed objects stored within.
-	 */
-	ManagedContainer(Handle<Managed> owner) : owner(owner){};
-
-	/* State functions */
-	size_type size() const noexcept { return c.size(); }
-	bool empty() const noexcept { return c.empty(); }
-
-	/* Iterators */
-	iterator begin() { return c.begin(); }
-	iterator end() { return c.end(); }
-
-	iterator rbegin() { return c.rbegin(); }
-	iterator rend() { return c.rend(); }
-
-	const_iterator begin() const { return c.cbegin(); }
-	const_iterator end() const { return c.cend(); }
-
-	const_iterator cbegin() const { return c.cbegin(); }
-	const_iterator cend() const { return c.cend(); }
-
-	const_iterator rbegin() const { return c.crbegin(); }
-	const_iterator rend() const { return c.crend(); }
-
-	const_iterator crbegin() const { return c.crbegin(); }
-	const_iterator crend() const { return c.crend(); }
-
-	/* Clear function */
-	void clear() noexcept
-	{
-		for (const_iterator it = cbegin(); it != cend(); it++) {
-			deleteElement(*it);
-		}
-		c.clear();
-	}
-};
-
-/**
- * Template class which can be used to collect "Owned" refrences to a certain
- * type of managed object. This class should be used in favour of other
- * collections of handles, it takes care of acquiring an owned handle from the
- * owner of this collection whenever a new element is added.
- *
- * @param T is the type of the Managed object that should be managed.
- * @param Collection should be a STL list container of Owned<T>
- */
-template <class T, class Collection>
-class ManagedGenericList : public ManagedContainer<T, Collection> {
-private:
-	using Base = ManagedContainer<T, Collection>;
-
-public:
-	using Base::ManagedContainer;
-	using collection_type = typename Base::collection_type;
-	using value_type = typename Base::value_type;
-	using reference = typename Base::reference;
-	using const_reference = typename Base::const_reference;
-	using iterator = typename Base::iterator;
-	using const_iterator = typename Base::const_iterator;
-	using size_type = typename Base::size_type;
-
-	/**
-	 * Initialize with an iterator from another collection.
-	 *
-	 * @param owner is the managed object which owns the collection and all
-	 * handles to other managed objects stored within.
-	 * @param first is an iterator pointing at the first element to be copied
-	 * from some other collection.
-	 * @param last is an iterator pointing at the last element to be copied
-	 * from some other collection.
-	 */
-	template <class InputIterator>
-	ManagedGenericList(Handle<Managed> owner, InputIterator first,
-	                   InputIterator last)
-	    : ManagedContainer<T, Collection>(owner)
-	{
-		insert(Base::c.begin(), first, last);
-	}
-
-	/**
-	 * Initialize with another collection.
-	 *
-	 * @param owner is the managed object which owns the collection and all
-	 * handles to other managed objects stored within.
-	 * @param in is a reference at some other collection with content that
-	 * should be copied.
-	 */
-	template <class InputCollection>
-	ManagedGenericList(Handle<Managed> owner, const InputCollection &in)
-	    : ManagedContainer<T, Collection>(owner)
-	{
-		for (const auto &e : in) {
-			push_back(e);
-		}
-	}
-
-	/* Front and back */
-	reference front() { return Base::c.front(); }
-	const_reference front() const { return Base::c.front(); }
-	reference back() { return Base::c.back(); }
-	const_reference back() const { return Base::c.back(); }
-
-	/* Insert and delete operations */
-
-	iterator insert(const_iterator position, Handle<T> h)
-	{
-		value_type v = Base::owner->acquire(h);
-		addElement(v);
-		return Base::c.insert(position, v);
-	}
-
-	template <class InputIterator>
-	iterator insert(const_iterator position, InputIterator first,
-	                InputIterator last)
-	{
-		bool atStart = true;
-		const_iterator pos = position;
-		for (InputIterator it = first; it != last; it++) {
-			if (atStart) {
-				atStart = false;
-			} else {
-				pos++;
-			}
-			pos = insert(pos, *it);
-		}
-		return pos;
-	}
-
-	iterator find(const Handle<T> h)
-	{
-		for (iterator it = Base::begin(); it != Base::end(); it++) {
-			if (*it == h) {
-				return it;
-			}
-		}
-		return Base::end();
-	}
-
-	const_iterator find(const Handle<T> h) const
-	{
-		for (const_iterator it = Base::cbegin(); it != Base::cend(); it++) {
-			if (*it == h) {
-				return it;
-			}
-		}
-		return Base::cend();
-	}
-
-	void push_back(Handle<T> h)
-	{
-		value_type v = Base::owner->acquire(h);
-		this->addElement(v);
-		Base::c.push_back(v);
-	}
-
-	void pop_back()
-	{
-		if (!Base::empty()) {
-			this->deleteElement(back());
-		}
-		Base::c.pop_back();
-	}
-
-	iterator erase(iterator position)
-	{
-		this->deleteElement(*position);
-		return Base::c.erase(position);
-	}
-
-	iterator erase(iterator first, iterator last)
-	{
-		for (const_iterator it = first; it != last; it++) {
-			this->deleteElement(*it);
-		}
-		return Base::c.erase(first, last);
-	}
-};
-
-/**
- * Special type of ManagedContainer based on an STL map.
- */
-template <class K, class T, class Collection>
-class ManagedGenericMap : public ManagedContainer<T, Collection> {
-private:
-	using Base = ManagedContainer<T, Collection>;
-
-public:
-	using Base::ManagedContainer;
-	using collection_type = typename Base::collection_type;
-	using value_type = typename Base::value_type;
-	using key_type = typename Collection::key_type;
-	using reference = typename Base::reference;
-	using const_reference = typename Base::const_reference;
-	using iterator = typename Base::iterator;
-	using const_iterator = typename Base::const_iterator;
-	using size_type = typename Base::size_type;
-
-private:
-	value_type acquirePair(std::pair<K, Handle<T>> val)
-	{
-		return value_type{val.first, Base::owner->acquire(val.second)};
-	}
-
-public:
-	/**
-	 * Initialize with an iterator from another collection.
-	 *
-	 * @param owner is the managed object which owns the collection and all
-	 * handles to other managed objects stored within.
-	 * @param first is an iterator pointing at the first element to be copied
-	 * from some other collection.
-	 * @param last is an iterator pointing at the last element to be copied
-	 * from some other collection.
-	 */
-	template <class InputIterator>
-	ManagedGenericMap(Handle<Managed> owner, InputIterator first,
-	                  InputIterator last)
-	    : ManagedContainer<T, Collection>(owner)
-	{
-		insert(first, last);
-	}
-
-	/**
-	 * Initialize with another collection.
-	 *
-	 * @param owner is the managed object which owns the collection and all
-	 * handles to other managed objects stored within.
-	 * @param in is a reference at some other collection with content that
-	 * should be copied.
-	 */
-	template <class InputCollection>
-	ManagedGenericMap(Handle<Managed> owner, const InputCollection &in)
-	    : ManagedContainer<T, Collection>(owner)
-	{
-		for (const auto &e : in) {
-			insert(*in);
-		}
-	}
-
-	std::pair<iterator, bool> insert(std::pair<K, Handle<T>> val)
-	{
-		value_type v = acquirePair(val);
-		this->addElement(v);
-		return Base::c.insert(v);
-	}
-
-	iterator insert(const_iterator position, std::pair<K, Handle<T>> val)
-	{
-		value_type v = acquirePair(val);
-		this->addElement(v);
-		return Base::c.insert(position, v);
-	}
-
-	template <class InputIterator>
-	void insert(InputIterator first, InputIterator last)
-	{
-		for (auto it = first; it != last; it++) {
-			insert(acquirePair);
-		}
-	}
-
-	iterator erase(const_iterator position)
-	{
-		this->deleteElement(*position);
-		return Base::c.erase(position);
-	}
-
-	size_t erase(const key_type &k)
-	{
-		iterator pos = find(k);
-		if (pos != Base::end()) {
-			erase(pos);
-			return 1;
-		}
-		return 0;
-	}
-
-	iterator erase(const_iterator first, const_iterator last)
-	{
-		for (const_iterator it = first; it != last; it++) {
-			this->deleteElement(*it);
-		}
-		return Base::c.erase(first, last);
-	}
-
-	iterator find(const key_type &k) { return Base::c.find(k); }
-	const_iterator find(const key_type &k) const { return Base::c.find(k); }
-};
-
-/**
- * Special type of ManagedGenericList based on an STL vector.
- */
-template <class T>
-class ManagedVector : public ManagedGenericList<T, std::vector<Owned<T>>> {
-public:
-	using ManagedGenericList<T, std::vector<Owned<T>>>::ManagedGenericList;
-};
-
-/**
- * Special type of ManagedGenericMap based on an STL map.
- */
-template <class K, class T>
-class ManagedMap : public ManagedGenericMap<K, T, std::map<K, Owned<T>>> {
-public:
-	using ManagedGenericMap<K, T, std::map<K, Owned<T>>>::ManagedGenericMap;
-};
-}
-
-#endif /* _OUSIA_MANAGED_CONTAINERS_H_ */
-