Add Björn Dahlgren to the AUTHORS/aboutus. Welcome to SymPy!
use strategies.tree.greedy in fu
use uncompiled versions of CTR# in trees
add comments for chains and choices
fu takes objective function
add objective test
remove RL1/2 CTR1234 from fu namespace
remove underscores from RL1/2 CTR1/2/3/4
remove functools.partial import
change objective -> measure in fu
add docstring for measure in fu function
Drop obsoleted comment about with statement in risch.py (closes issue 3665)
Preprocess user input for rsolve to allow linear recurrences in a more generic form (e.g. y(n) + a*(y(n + 1) + y(n - 1))
expose max and pow keywords on TR* routines
simplify FU dict
Issue 2187:IntQubit to work with inner products
Fix issue 3565

    1) for |a| or |b| = oo: handle the case of geometic series
       with eval_sum_hyper()
    2) in doit(): work arround the case when eval_sum returns
       partially evaluated sum with Piecewise
Remove ancient, commented out, code from Sum.doit()

    This fragment is in place long time
    ago (commit 157dd374e728e37eebef729584cd9e94fad02bc8,
    issue 577) for no reason.
Merge pull request #1900 from amitjamadagni/innerproduct

Issue 2187:IntQubit to work with inner products
Merge pull request #1904 from skirpichev/misc

issues 3565 and 3665; preprocess rsolve input