#11317: update pynac to 0.2.2
-----------------------------------+----------------------------------------
   Reporter:  burcin               |          Owner:  burcin                    
                                                           
       Type:  defect               |         Status:  needs_review              
                                                           
   Priority:  major                |      Milestone:  sage-4.7.1                
                                                           
  Component:  symbolics            |       Keywords:                            
                                                           
Work_issues:                       |       Upstream:  N/A                       
                                                           
   Reviewer:  Karl-Dieter Crisman  |         Author:  Richard Kreckel, Vladimir 
V. Kisil, Jan Rheinländer, Alexei Sheplyakov, Burcin Erocal
     Merged:                       |   Dependencies:                            
                                                           
-----------------------------------+----------------------------------------
Changes (by kcrisman):

  * reviewer:  => Karl-Dieter Crisman


Comment:

 This is fine too.  Notice that there is a typo in the Ginac upstream.
 {{{

 static ex tanh_conjugate(const ex & x)
 {
         // conjugate(tan(x))==tan(conjugate(x))
         return tanh(x.conjugate());
 }
 }}}
 The method is correct, but the doc says `tan`, not `tanh`.

 ----

 As for the other things, they are nearly all compiler improvements.  I'll
 just check these work on sage.math, but otherwise looks good to go.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11317#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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