bump Project.toml to v1.2.0 (#107)

diff --git a/Project.toml b/Project.toml
index 17a3be0..611d01d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Arrow"
 uuid = "69666777-d1a9-59fb-9406-91d4454c9d45"
 authors = ["quinnj <quinn.jacobd@gmail.com>"]
-version = "1.1.0"
+version = "1.2.0"
 
 [deps]
 BitIntegers = "c3b6d118-76ef-56ca-8cc7-ebb389d030a1"