Speed up queries with Gzip if possible.

Running timeit() on get_all_agencies() without Gzip (5x10) yields:
[3.1418709754943848, 3.207519054412842, 3.2698700428009033, 4.492588996887207, 3.0843920707702637]

Running timeit() on get_all_agencies() *with* Gzip (5x10) yields:
[2.237017869949341, 2.2323968410491943, 2.205096960067749, 2.129487991333008, 2.8217599391937256]