fix output of 'blankSeparate'
simplify square root in 'radicalSolve' of quadratic equations
remove unused 'mapSolve'
add hashUpdate! to InnerIndexedTwoDimensionalArray
fix )abbrev from domain to package
Fix bug in '*' and 'gcd' in Factored
Whitespace cleanup
Fix input form of formal derivatives
fix fix usage of insert! and remove!
Add support for '^' in 'sign'