docs: updated changelog and nimble setting

FossilOrigin-Name: 9646bae5b7eda2aa0db7ee94594c626023c6f7c7ae035e00b4c5f469826feb82

Author: thindil

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 Tag **BREAKING** means the change break compatibility with a previous version
 of the shell.
 
-## [Unreleased]
+## [0.5.0] - 2023-01-05
 
 ### Added
 - Directory separator to tab completion if the completion's result is a

nish.nimble

@@ -2,7 +2,7 @@ import os
 
 # Package
 
-version = "0.4.0"
+version = "0.5.0"
 author = "Bartek thindil Jasicki"
 description = "A non-POSIX, multiplatform command line shell"
 license = "BSD-3-Clause"