LAPACK free matrix inversion.
Bug fix in Rational division.
LAPACK free matrix inversion and unary #round. Fixed bug in rational aritmetic.
LAPACK free matrix inversion using Gauss-Jordan elimination.

LAPCK free matrix inverse
Wrote tests for LAPACK free matrix inversion

Wip

LAPACK free matrix inversion

Flip back of columns remaining

Column unscramble

Fixed bug in rational abs and inverse refactor

test

Tests for #round

Fixed insane rational arithmetic bug

Added #round and dtype verfiers

Rational arithmetic fix

Matrix exact inverse with lda ldb

Rational division fix
Merge pull request #286 from v0dro/inverse

LAPACK free matrix inversion using Gauss-Jordan elimination.