Implemented `sampling_interval` argument to `Population.record()` for NEST backend
Merge branch 'sampling_interval' of https://github.com/antolikjan/PyNN
bug correction
cleanup
test_hardware_brainscales.py added to test/system
test_hardware_brainscales added. First tests of cell type IF_cond_exp.
specific hardware.brainscales tests added
test_hardware_brainscales.py modified. Still failing loop setup-run-end. Basic cell types added in scenrios testing
make test_hardware_brainscales used unitest-like tests
structure to perform unittests with the hardware
better hardware test coverage for test_population.py
copying relevant unittests to hardware/unittests
two unit tests made hardware compatible: test_populationview.py and test_simulation_control.py
change parameter names to be tested in hardware tests
Update .travis.yml

this will exclude the backends subdirectory from the nosetests, as desired
Merge branch 'unittests_with_backends' into test_brainscales_backend
solve the SpikeSOurceArray recording issue in hardware backend, in which the ids are negative and in the reversed order
set exclude correctly in test_simulation_control
assert V_spike<E_reset in ADEX.cpp solved. Changes of the parameters tested in test_population.py to make it more interesting for the hardware
test_assembly, test_population, test_projection updates to make it compatible with the hardware. test_connectors separated into serial and parallel