Merge pull request #58 from JuliaData/jps/julia-1.4

LB Julia to 1.4, and bump to 0.3.9

Author: jpsamaroo

Project.toml

@@ -2,7 +2,7 @@ name = "MemPool"
 uuid = "f9f48841-c794-520a-933b-121f7ba6ed94"
 license = "MIT"
 desc = "a simple distributed data store"
-version = "0.3.8"
+version = "0.3.9"
 
 [deps]
 DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
@@ -14,7 +14,7 @@ Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"
 
 [compat]
 DataStructures = "0.18"
-julia = "1"
+julia = "1.4"
 
 [extras]
 Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"