Method fuzzyEqual

jni/venus/vec2.h:101–101

	bool operator !=(const vec2<T>& rhs) const { return !(*this == rhs); }
	friend bool fuzzyEqual(const vec2<T>& lhs, const vec2<T>& rhs) { return lhs == rhs; }

	T length2() const { return x*x + y*y; }
	T length() const { return std::sqrt(x*x + y*y); }