more plot modifications
save time vector of correct length if routine exits early
fluxes calculation takes into account eddy.tend which is set if track_eddy exits early. also, do eddy stat processing only if valid eddy structure is found.this lets the object be created even if track_eddy fails.
removed factor computation in roms_create so that I can vary eddy burger number
phase speed estimates added to plots
added plotting of SSH eddy contour functions. using it in animate_zeta. Also, added center, western and eastern edge to animate_zeta output