keep floor(i) unchanged if i is imaginary symbol
Changed __add__ to return the correct phase for the addition of two TWave objects
change warning flag to warn in line with code
Adds line wrapping to Fortran codegen call signatures.

Fortran has a maximum line length of 132 characters. The fcode printer handles
this for the expressions itself, but the call signature failed to wrap if the
number or length of arguments is too large. This fix should deal with most
normal cases.

Fixes issue #7934.
Raise TypeError instead of returning False, if we can't sympify 'other'

Unfortunately, we can't use _sympifyit decorator, because in py2 class
instances are compared by object identity ("address") if no other
comparison helpers are defined.

fixes #7833
Use S.Infinity in _infimum_key, if we can't return infimum
Added field numbers in .format call for Python 2.6 compatibility.
test non-linear equations in _solve_system
Merge pull request #7956 from skirpichev/7833-fix

relational ops: Don't use False as a replacement for 'other', if we can't sympify 'other'
Add Mridul Seth to AUTHORS/aboutus. Welcome to SymPy!
cache autowrap
add pi/2 awareness to piecewise of Ray when giving arbitrary angle
Merge pull request #7968 from moorepants/fortran-arg-line-wrap

Adds line wrapping to Fortran codegen call signatures.
Merge pull request #7921 from smichr/real3

keep floor(i) unchanged if i is imaginary symbol
fixed docstring tests
Merge pull request #7979 from smichr/geom

add pi/2 awareness to piecewise of Ray when giving arbitrary angle
Fix the MathJax CDN

The old CDN gives 404. We also need to go in the docs repo and retroactively
fix all built docs there.

Fixes #7983.
change docstring to reflect preference for tuples over lists
test_code_quality shows no errors
manually revert 4346424be94ff3e0a4a4fbfc5a6f35a3a0009d5a