Release prep: bump version to 0.1.9 (#165)

Author: ChrisRackauckas

Project.toml

@@ -1,7 +1,7 @@
 name = "ModelOrderReduction"
 uuid = "207801d6-6cee-43a9-ad0c-f0c64933efa0"
 authors = ["Bowen S. Zhu <bowenzhu@mit.edu> and contributors"]
-version = "0.1.8"
+version = "0.1.9"
 
 [deps]
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"