Bump to v0.1.3 [no ci]

Author: mtfishman

Project.toml

@@ -1,7 +1,7 @@
 name = "Observers"
 uuid = "338f10d5-c7f1-4033-a7d1-f9dec39bcaa0"
 authors = ["Giacomo Torlai <gttorlai@amazon.com>", "Matthew Fishman <mfishman@flatironinstitute.org>"]
-version = "0.1.2"
+version = "0.1.3"
 
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"