Add classification based coverages results methods.
add nsf cov texer
Add update_segments to update ground truth segments inconsistence
add xframe frames  list plot

Fix ground truth update_segments bug
Add `more` option for save figure in xframe plotter
add mater to plot paired frame slide pair mat within dist
add experimental notebook
Add slide_ans voter to xframes
add final base evaluations, remain timeline cov
Add final statistic set and slide, switch coverages

Timeline coverage still needed.
Plots are not included
add rec_plot
add timeline cov
add method for sf list
Add final xframe annotates
Merge pull request #89 from speed-of-light/xf_ext_sf

Xf ext sf