DESCRIPTION, NEWS, inst/sympref.m: Bump version to '3.0.1'.

* DESCRIPTION: Bump version for release and add date.
* NEWS: Bump version for release, add date and reformat.
* inst/sympref.m: Bump version for release.

Author: Alex Vong

DESCRIPTION

@@ -1,6 +1,6 @@
 Name: symbolic
-Version: 3.0.0+
-Date: 2022-07-06
+Version: 3.0.1
+Date: 2022-08-09
 Author: Colin B. Macdonald <[email protected]>
 Maintainer: Colin B. Macdonald <[email protected]>
 Title: Octave Symbolic Package using SymPy

NEWS

@@ -1,5 +1,5 @@
-octsympy 3.0.0+
-===============
+octsympy 3.0.1 (2022-08-09)
+===========================
 
   * New `@double` numerical functions; these are wrappers around SymPy,
     so they are slower than native floating-point implementations.

inst/sympref.m

@@ -1,6 +1,7 @@
 %% Copyright (C) 2014-2020, 2022 Colin B. Macdonald
 %% Copyright (C) 2017 NVS Abhilash
 %% Copyright (C) 2017 Mike Miller
+%% Copyright (C) 2022 Alex Vong
 %%
 %% This file is part of OctSymPy.
 %%
@@ -173,7 +174,7 @@
 %% @example
 %% @group
 %% sympref version
-%%   @result{} 3.0.0+
+%%   @result{} 3.0.1
 %% @end group
 %% @end example
 %%
@@ -216,7 +217,7 @@
 
     case 'version'
       assert (nargin == 1)
-      varargout{1} = '3.0.0+';
+      varargout{1} = '3.0.1';
 
     case 'display'
       if (nargin == 1)