improved dup_roots_upper_bound; what used to be counter t is now list t
fixed the min in dup_roots_upper_bound
added a line I had missed to copy
replaced tabs by spaces
"beautified" comments
more "beautification"; hope last commit
comments became green
changed variable Q to QL but problems still persist
returned code to original form; still do not see why does not pass Travis CI
Update the intervals in tests
Added _eval_Abs for polar_lift

Abs is the same on every branch, so this is ok.
fixes #7450

>>> Abs(polar_lift(-1-I))
sqrt(2)
>>> integrate(exp(-(1+I)*x), (x, 0, oo))
sqrt(2)*exp(-I*pi/4)/2

Added a test for Abs(polar_lift(..))
Added test for the integral mentioned in the issue.
Add carstimon to AUTHORS/aboutus. Welcome to SymPy!
Merge pull request #1 from smichr/auth

Add carstimon to AUTHORS/aboutus. Welcome to SymPy!
merge with master
Merge pull request #2 from smichr/auth

Auth
Merge pull request #7494 from certik/pr-7257

improved dup_roots_upper_bound
Merge pull request #7495 from carstimon/7450_periodicarg

Added _eval_Abs for polar_lift
check for plain sqrt in denominators
remove XXX regarding sorting of MinMax args

The args of Min and Max that are used for hashing and comparison
purposes are stored as a frozenset so sorting is not necessary.