wishmom 1.2.0

iwishmom(): corrected the existence test for inverse moments. The moment of total degree k = sum_j jf_j + iw exists if and only if (n-m+1)/alpha > k, i.e. n1 = n-m+1-alpha > (k-1)alpha (real case n-m+1 > 2k, complex case n-m+1 > k). Versions 1.0-1.1 used n1 > 2k and returned NaN for some moments that exist.
wishmom_sym(): the printed coefficients were all divided by n (the formatting routine treated the coefficient of n as a constant term). The numerical function wishmom() was not affected. iwishmom_sym() was correct.
wishmom(), iwishmom(): the degenerate case k = 0 now returns m (or the identity matrix).
Vignette: corrected the statement of the existence condition; regenerated the wishmom_sym() example outputs from the corrected code; fixed a typo in the iwish_psr() example (iwsih_psr -> iwish_psr) and in the description of its k argument.

wishmom 1.1.0

Added wishmom_sym(), iwishmom_sym(), denpoly(), iwish_psr(), qkn_coeffr().