[fractal/fractal-next] Add futures as deps

[Julian Sparber <jsparber src gnome org>]

commit 6e31eff455dd6a33fd2c864cbbb41b938472a419
Author: Julian Sparber <julian sparber net>
Date:   Tue Apr 27 12:25:31 2021 +0200

    Add futures as deps

 Cargo.lock | 1 +
 Cargo.toml | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/Cargo.lock b/Cargo.lock
index c3b1738d..c44f8f4e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -571,6 +571,7 @@ name = "fractal"
 version = "0.1.0"
 dependencies = [
  "chrono",
+ "futures",
  "gettext-rs",
  "glib",
  "gtk-macros",
diff --git a/Cargo.toml b/Cargo.toml
index f7dbc58f..36b822c5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,7 @@ url = "2.2"
 secret-service = "2.0"
 html2pango = "0.4"
 chrono = "0.4"
+futures = "0.3"
 
 [dependencies.sourceview]
 branch = "main"