
                       Version history of the RCWA package
                       ===================================

Initial version: 1.0.0 (April 26, 2005)

Changes between version 1.0.0 and version 1.0.2:

 - Several cosmetic improvements, no new functionality.

Changes between version 1.0.2 and version 1.0.3:

 - Added `View' - methods for certain group rings of rcwa groups and their
   elements (compact form to save space; not documented yet).

Changes between version 1.0.3 and version 1.1.0 (June 16, 2005)

 - The `Display' - method for rcwa mappings over the integers now recognizes
   an option `xdvi'. If this option is set, a LaTeX representation of the
   rcwa mapping is written to a file, LaTeX'ed and shown with xdvi.
   Try e.g. Display(Random(RCWA(Integers)):xdvi);.

 - An example `A group which acts 2-transitive on the positive integers'
   has been added to the manual. In this example, the 2-transitivity of
   a given wild rcwa group is checked computationally.

Changes between version 1.1.0 and version 1.2.0 (August 8, 2005)

 - An example `A group which acts 3-transitive, but not 4-transitive on Z'
   has been added to the manual. In this example, the 3-transitivity and
   non-4-transitivity of the action of a given wild rcwa group on Z is
   checked computationally.

 - The example which has been added in the previous version has been extended
   -- now it is checked that the given group acts even 4-transitive on the
   positive integers.

 - A `RepresentativeAction' method for RCWA(Z) and two unions of residue
   classes has been added.

Changes between version 1.2.0 and version 1.2.1

 - Adapted to an incompatible change in GAP 4.4.6 w.r.t. `InstallValue'
   for families.

Changes between version 1.2.1 and version 1.2.2

 - Some code which was misplaced in RCWA has been moved to the GAP library
   (rudimentary support for floats, `PadicValuation',
   `EpimorphismFromFreeGroup').

 - An example has been added to the manual in which finite quotients of
   Grigorchuk groups are constructed.

Changes between version 1.2.2 and version 1.3.0 (November 22, 2005)

 - Operations `Induction', `RightInverse' and `CommonRightInverse'
   have been added.

 - The code for `Restriction' has been improved.

 - RepresentativeAction(RCWA(Integers),P1,P2) works now also in cases
   where P1 and P2 do not consist entirely of single residue classes,
   but of unions of residue classes.

 - The multiplication of rcwa mappings is now slightly faster due to making
   use of a better bound for the modulus of the product.

 - The archive file now includes a copy of the author's thesis
   `Restklassenweise affine Gruppen' as well as an english translation of it.

Changes between version 1.3.0 and version 1.3.1

 - Added a list of a few (harmless!) errata for the author's thesis.

Changes between version 1.3.1 and version 1.3.4

 - Corrected errata known on 29/12/2005 in the copy of the thesis
   distributed with this package.

 - Corrected a bunch of typo's in the english translation of the thesis.

Changes between version 1.3.4 and version 1.3.5

 - Made package documentation autoloaded.


