0.4.1: 30 September 2008
    * updated to work with AERN-Real 0.9.7    
0.4: 20 August 2008
    * fixed several serious bugs in sin and cos
    * added arctan
0.3.0.3: 7 August 2008
    * revamped package description to make it much shorter and linked it
      to the main module
0.3.0.2: 7 August 2008
    * deleted irrelevant/confusing text from package description
0.3.0.1: 7 August 2008
    * fixed markup in package description
0.3.0: 7 August 2008
    * initial release of AERN-RnToRm after one year of work and two successful 
      internal applications