Symbolics tracker bug for Sage Days 31

[vbraun]

To keep track of the symbolic patches that we were working on at Sage Days 31:

Merged in Sage-4.7.1.alpha3 but not yet in alpha2

• deprecated_function_alias for Cython classes #11320: deprecated_function_alias for Cython classes

Positively reviewed and ready to be merged

• Clean and harmonize module_list.py #11377: Clean and harmonize module_list.py
• easier access to operands of a symbolic expression #9989: easier access to operands of a symbolic expression
• Add is_series() method and others to symbolic expressions #10859: Add is_series() method and others to symbolic expressions

Needs review

• symbolic variable names should be valid identifiers, or ridiculousness follows #7496: symbolic variable names should be valid identifiers
  • obsoletes Sage allows creation of variables with empty name #9724: Sage allows creation of variables with empty name

TODO

• Pynac comparison functions do not provide a SWO #9880: Segfault in PyNaC 0.2.0.p4.
  • obsoletes update pynac to 0.2.3 #11415: update pynac to 0.2.3
  • obsoletes Make atan2(0,0) consistent #11423: Make atan2(0,0) consistent
• Refcounting for Singular rings #11339: Illegal use of __deallocate__ in cython (pyx) code

CC: @burcin @jdemeyer

Component: symbolics

Keywords: sd31

Reviewer: Burcin Erocal

Issue created by migration from https://trac.sagemath.org/ticket/11473

[burcin]

Reviewer: Burcin Erocal

[burcin]

comment:7

#9880 is finally in! We can close this one as well. :)

Cheers!

[burcin]

Changed author from Volker Braun to none