release v2.8.4

Author: benbovy

docs/release_notes.adoc

@@ -1,12 +1,16 @@
 [#release_notes]
 == Release notes
 
-=== Version 2.9.0 (Unreleased)
+=== Version 2.8.4 (29 September 2023)
 
 ==== Changes
 
+- Update source and online documentation of silt fraction #54
+
 ==== Bug fixes
 
+- Fixed compilation issues #56
+
 === Version 2.8.3 (2 December 2022)
 
 ==== Changes

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name="fastscapelib-fortran",
-    version="2.9.0dev",
+    version="2.8.4",
     description=("A library of efficient algorithms"
                  "for landscape evolution modeling"),
     author='Jean Braun',