Allow single letter in version string

Modified regex patterns to allow a single letter (a-z, A-Z) after the last digit in the version string.

Author: UnknownException

CUERipper.Avalonia/Services/UpdateService.cs

@@ -52,7 +52,7 @@ public async Task<bool> FetchAsync()
                 return false;
             }
 
-            string versionPattern = @"^v\d+\.\d+\.\d+$";
+            string versionPattern = @"^v\d+\.\d+\.\d+[a-zA-Z]?$";
             Regex regex = new(versionPattern);
             if (!regex.IsMatch(latestRelease.Content.TagName))
             {
@@ -189,7 +189,7 @@ private void WriteReleasesToDiskCache(GithubRelease? githubRelease, string? auth
 
         private static GithubAsset? GetSetupAsset(GithubRelease latestRelease)
         {
-            const string EXE_PATTERN = @"^CUETools_Setup_\d+\.\d+\.\d+\.exe";
+            const string EXE_PATTERN = @"^CUETools_Setup_\d+\.\d+\.\d+[a-zA-Z]?\.exe";
             Regex regex = new(EXE_PATTERN);
 
             return latestRelease.Assets
@@ -199,7 +199,7 @@ private void WriteReleasesToDiskCache(GithubRelease? githubRelease, string? auth
 
         private static GithubAsset? GetHashAsset(GithubRelease latestRelease)
         {
-            const string HASH_PATTERN = @"^CUETools_Setup_\d+\.\d+\.\d+\.exe.sha256$";
+            const string HASH_PATTERN = @"^CUETools_Setup_\d+\.\d+\.\d+[a-zA-Z]?\.exe\.sha256$";
             Regex regex = new(HASH_PATTERN);
 
             return latestRelease.Assets

CUETools.Processor/CUESheet.cs

@@ -28,7 +28,7 @@ public class CUESheet
     {
         #region Fields
 
-        public const string CUEToolsVersion = "2.2.6";
+        public const string CUEToolsVersion = "2.2.6a";
 
         private bool _stop, _pause;
         private List<CUELine> _attributes;

packaging.ps1

@@ -1,7 +1,7 @@
 $ErrorActionPreference = "Stop"
 
 $cueToolsDirectories = Get-ChildItem -Path "bin/Release/CUETools_*" -Directory | 
-    Where-Object { $_.Name -match "CUETools_(\d+\.\d+\.\d+)" } |
+    Where-Object { $_.Name -match "CUETools_(\d+\.\d+\.\d+[a-zA-Z]?)" } |
     Sort-Object { [version]($matches[1]) } -Descending
 
 if (-not $cueToolsDirectories) {