Method append

3rdparty/bx/include/tinystl/string.h:201–209

	template<typename allocator>
	inline void basic_string<allocator>::append(const char* first, const char* last) {
		const ptrdiff_t newsize = ((m_last - m_first) + (last - first) + 1);
		if (m_first + newsize > m_capacity)
			reserve((newsize * 3) / 2);

		for (; first != last; ++m_last, ++first)
			*m_last = *first;
		*m_last = 0;
	}

	template<typename allocator>
	inline void basic_string<allocator>::assign(const char* sz, size_t n) {