Changes to 0.7.3 * Update to mpfr 2.1.1 * Documentation update, document the plotting functions for example. * Blinking cursor can now be turned off in gnome-genius * Set default precision to 128 bits. Who needs 256 can set it in the preferences. Also save/restore the precision * Add LinePlotClear, LinePlotDrawLine functions to allow drawing arbitrary lines and to allow a way to do parametric plots until that functionality is actually added * Added: NewtonsMethodPoly, wait * Lots of work on the internal number structure to make it faster/more memory efficient and to fix some possible bugs/issues * Fix float formatting bug that sometimes caused hangs and crashes * Fix large leak on element by element operations * Fix compilation with external mpfr * Bunch of other little bugs/issues fixed.