Class almost

src/serializers/SvgSerializer.cpp:418–434

	}

	class almost {
	private:
		double v_, eps_;
	public:
		almost(double v, double eps = 1.e-7)
			: v_(v)
			, eps_(eps)
		{}

		bool operator==(double other) const {
			return std::fabs(other - v_) < eps_;
		}

		bool operator!=(double other) const {
			return !(*this == other);
		}
	};

	boost::optional<box_t> box_from_compound(TopoDS_Shape& compound) {
		/*