added more explanations on automatic maintenance of precision (poor man's interval calculus); added proposed Yacas bindings for BigNumber interface.
added more explanations on automatic maintenance of precision (poor man's
interval calculus);
added proposed Yacas bindings for BigNumber interface.

tomaszkrysiuk/yacas,martanoga/yacas,tomaszkrysiuk/yacas,MateuszSnamina/yacas,tomaszkrysiuk/yacas,grzegorzmazur/yacas,qwert2003/yacas,grzegorzmazur/yacas,MateuszSnamina/yacas,martanoga/yacas,tomaszkrysiuk/yacas,grzegorzmazur/yacas,MateuszSnamina/yacas,MateuszSnamina/yacas,martanoga/yacas,MateuszSnamina/yacas,tomaszkrysiuk/yacas,qwert2003/yacas,qwert2003/yacas,tomaszkrysiuk/yacas,qwert2003/yacas,martanoga/yacas,MateuszSnamina/yacas,qwert2003/yacas,grzegorzmazur/yacas,martanoga/yacas,qwert2003/yacas,martanoga/yacas,grzegorzmazur/yacas,qwert2003/yacas,tomaszkrysiuk/yacas,grzegorzmazur/yacas,MateuszSnamina/yacas,martanoga/yacas,grzegorzmazur/yacas