Merge branch 'master' into 3265-eval-lt-fix
whitespace removed
Revert "Handle NotImplementedError in Pow.nseries"

This reverts commit 17d61527faa736497b4a2ff37cb6345b93f2a601.
Added until test_Y3
Fix end-of-file
A better handling for rest=0 case
Cleanup prefactor calculation
Merge branch 'logx-clean' into 3265-eval-lt-fix
Merge pull request #2506 from asmeurer/satisfiable_expr

Make satisfiable() work with arbitrary expressions, not just Symbols
Merge pull request #2553 from amitsaha/master

Change to gmail address in AUTHORS for Amit Saha
Merge branch 'master' into 2555-residue
Generalize the code printing of And, Or, Not.

Move the printing of And, Or, and Not up in the class hierarchy to
the CodePrinter class and make it customizable by overriding a dict.
Add Fortran code printing for And, Or, Not, add tests.
Generalize the code printing of Relational.

Allow relational operators to be overriden using a dict.
Fix the Fortran printing of Ne, add tests.
Implement Fortran printing of Xor, Equivalent, add tests.
Fix the precedence order for Relational.

Relationals are somewhere between And and Add operations
in the precedence tables for python, C, Fortran, etc.
Split gmpy & matplotlib tests again (to 3 splits)
Add test for bug in piecewise integration

*  Integral(exp(x*t),(t,0,y)).doit() fails
Fix bug in Piecewise._eval_interval

- now has a consistent return form