New Release: Singular version 1-4

Much faster Groebner basis and related computations (speedup 2 up to 100)
Arbitrary long real and complex ground fields: numeric computations (solving, interpolation, resultants).
New implementation of Bareiss algorithms (Lie-Saunders): Determinants and row-echelon computation much faster (speedup up to 100)
Hilbert-function driven resolution computations
New libraries: monodromy, spcurve, surf
Source code debugger for top-level code
Help system: choose among 6 possible browsers, wildcard expansions on help topics, extended and improved HTML help.
Emacs user interface.