[Webnucleo] ANNOUNCE: libnucnet 0.20 is now publicly available

[Announce list for the Webnucleo project.]

Release 0.20 of Webnucleo's libnucnet Module is now publicly available.
Libnucnet is a library of codes for storing and managing nuclear reaction
networks (that is, collections of nuclei and reactions among them). The
module is available at this location:

http://www.webnucleo.org/home/modules/libnucnet/0.20


  Below are the recent updates to the module:

        New:

        New API routines allow a user to determine whether a reaction rate
function has been registered with a reaction collection or whether
a zone is set to compute reverse rates from detailed balance. 
Example codes have been modified to illustrate use of those
routines.

        Fix:
        Output comments from the create zones example have been slightly
modified to describe the code actions more accurately.