added math module for vectors

Author: lichtkind

doc/Language/math.pod6

@@ -116,6 +116,9 @@ precision, the same as the default C<Int> class.
 Some modules in the ecosystem can work with additional data types
 mathematically:
 
+=item L<C<Math::Vector>|https://github.com/colomon/Math-Vector>
+basic operations for L<vectors|https://en.wikipedia.org/wiki/Coordinate_vector>.
+
 =item L<C<Math::Matrix>|https://github.com/pierre-vigier/Perl6-Math-Matrix>
 operates on the L<matrix field|https://en.wikipedia.org/wiki/Matrix_field>.