Introduce position buffer when motion is used
Introduce switch for datasets
Bugfix: Remove comma in parameter list
Bugfix renaming motion_buffer
Remove unneeded afferent method in ColorEarlyVisionModel
Add Gain Control for Spatial Frequency
Replace arbitrary motion_buffer by speed*max(lags)
Merge pull request #586 from Tobias-Fischer/errata2

Changes required to replicate results in fisher:ms14 except color. 
The reset_period still needs to be decoupled from num_lags, in a later commit.