Add files through Week 2.6

content/GA_2_3/Analysis_solution.ipynb

content/GA_2_3/GA_2_3_solution.pdf

content/GA_2_4/Analysis.ipynb

content/GA_2_4/Analysis_solution.ipynb

content/GA_2_4/CSIRO_Alt_seas_inc.txt

content/GA_2_4/README.md

content/GA_2_4/Report.md

content/GA_2_5/Analysis_GA.ipynb

content/GA_2_5/Analysis_GA_solution.ipynb

content/GA_2_5/Analysis_LP.ipynb

content/GA_2_5/Analysis_LP_solution.ipynb

content/GA_2_5/README.md

content/GA_2_5/Report.md

content/GA_2_5/Report_solution.md

content/GA_2_5/environment.yml

content/GA_2_5/figs/GAdiagram.png

content/GA_2_5/figs/equil.png

content/GA_2_5/figs/figs/GAdiagram.png

content/GA_2_5/figs/figs/equil.png

content/GA_2_5/figs/figs/link_travel_time_function.png