update interface with detectors

updated syntax to get new detector.project and detector.response logic. See this merge request for details of the changes to detector syntax.

This patch also includes changes to the workflow within event generators in order to save some computation time and memory. It is expected that the computation time saved will be small compared to the cost of waveform generation. However, the reduced memory consumption will hopefully be significant.

This patch also should fix #31 (closed).