removing test_issue2 from rotating_cone
fixing GC initialisation for prognosed-velocity solvers
Merge pull request #126 from slayoo/master

rmoving test_issue2; fixing initial velocity field divergence tests for prognosed-velocity solvers
Merge github.com:igfuw/libmpdataxx
change sin^300 to 1/2(1+cos) in the initial condition of the harmosc test
fixing gnuplot-iostream path and scan=yx usage
removing long double from test_concurrent_1d test as it fails with new gnuplot-iostream
fixing gnuplot-iostream search path in test_mpdata_1d_opt_nug.cpp
making Kahan on by default
adding epsilons to FCT fractions (previously only in iga variants)
optimising the epsilons in FCT - now frac()/where() is not needed at all!
yet one more compatibility fix for newer gnuplot-iostream
Merge pull request #127 from slayoo/master

Kahan on by default; epsilons in all FCT variants; gnuplot-iostream fixes
sync
Merge github.com:igfuw/libmpdataxx
divergent flow correction in 1D for abs and iga options
changes for paper in bombel tests: T_amb -> T_ref, no scaling of T_ref to 1
changes in shallow wated 1D for paper