Do the scipy mocking earlier in the Sphinx configuration
Fix wrong handling of division on state variables
Create pointers also for variables mentioned in USE_SPECIFIERS
Make sure to use the correct datatype for synapse creation
Allow recording of subexpressions that lead to a scalar value
Make sure to deal correctly with the not_refractory variable (see #38)
Deal with stochastic equations that multiply xi with 0 (might occur during testing)
Make sure all examples work