Output to file. Fixed calicum influx
Initial revision
Try selecting number of ions added by Poisson distribution rather than rounding
Experiment adding ions before update step
More plotting
Plot Kappa & NEURON traces on one plot
Rationalised so that multiple simulations should be possible
Fixed default value of P0
Removed redundant empty line
Remove some verbose comments
Finally got first test working

(i) Reorder update of states in _fixed_step_solve() so it occurs after
kappa steps
(ii) Have two kappa steps of 0.5dt each and add flux inbetween
Set initial Ca concentration lower and run compare_output
Output trace of Pi
Produce figures for paper with comparison of traces
Added getTime() method
Raise exception when NEURON and Kappa times mismatch
Updated file docs
Created nrn-kappa script to run Neuron-Kappa
Comment fix
Initial version of Refsim2 added