Move to Rust 2021 edition.

Doesn't seem like anything is changing re our code, but might as well
just stay with the lates.

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index de66e77..84da36d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@
 name = "zotapi"
 version = "0.1.0"
 authors = ["haraldei"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 clap = "2.33.0"