[fractal] Generate debug symbols in release mode

[Julian Sparber <jsparber src gnome org>]

commit e20d00adf0f02dd9a9803f9479663149470fcfcb
Author: Julian Sparber <julian sparber net>
Date:   Mon Apr 4 17:27:05 2022 +0200

    Generate debug symbols in release mode

 Cargo.toml | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/Cargo.toml b/Cargo.toml
index 7dcaa6952..01b733e3c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,9 @@ authors = ["Julian Sparber <julian sparber net>"]
 edition = "2018"
 rust-version = "1.58"
 
+[profile.release]
+debug = true
+
 [profile.dev.package."*"]
 opt-level = 3
 debug = false