Update Project.toml update min julia to 1.5

Author: mileslucas

Project.toml

@@ -1,7 +1,7 @@
 name = "NestedSamplers"
 uuid = "41ceaf6f-1696-4a54-9b49-2e7a9ec3782e"
 authors = ["Miles Lucas <mdlucas@hawaii.edu>"]
-version = "0.8.3"
+version = "0.9.0"
 
 [deps]
 AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"
@@ -25,4 +25,4 @@ MCMCChains = "3, 4, 5, 6"
 Parameters = "0.12"
 ProgressLogging = "0.1"
 StatsBase = "0.32, 0.33, 0.34"
-julia = "1.3"
+julia = "1.5"