Pinned exact versions for Travis 'oldest' test.
Pinned exact versions for Travis 'oldest' test.

jcrist/pydy,oliverlee/pydy,oliverlee/pydy,skidzo/pydy,jcrist/pydy,Shekharrajak/pydy,oliverlee/pydy,jcrist/pydy,Shekharrajak/pydy,Shekharrajak/pydy,jcrist/pydy,jcrist/pydy,Shekharrajak/pydy,jcrist/pydy,jcrist/pydy,skidzo/pydy,skidzo/pydy,skidzo/pydy