diff --git a/.github/actions/build-dotnet/Build-DotNetSolution.ps1 b/.github/actions/build-dotnet/Build-DotNetSolution.ps1
index 5767f88f6..cf6091db1 100644
--- a/.github/actions/build-dotnet/Build-DotNetSolution.ps1
+++ b/.github/actions/build-dotnet/Build-DotNetSolution.ps1
@@ -8,9 +8,7 @@
 
 function ConvertTo-Array([string] $rawInput)
 {
-    $rawInput.Replace("`r", "").Split("`n") |
-        % { $_.Trim() } |
-        ? { -not [string]::IsNullOrEmpty($_) }
+    $rawInput.Replace("`r", "").Split("`n") | % { $_.Trim() } | ? { $_ }
 }
 
 Write-Output ".NET version number: $Version"
@@ -50,6 +48,11 @@ if (Test-Path src/Utilities/Lombiq.Gulp.Extensions/Lombiq.Gulp.Extensions.csproj
     Write-Output "::endgroup::"
 }
 
+# This prepares the solution with the Lombiq.Analyzers files. The output and exit code are discarded because they will
+# be in error if there is a project without the LombiqNetAnalyzers target. Then there is nothing to do, and the target 
+# will still run on the projects that have it.
+dotnet msbuild '-target:Restore;LombiqNetAnalyzers' $Solution | Out-Null || bash -c 'true'
+
 Write-Output "Building solution with ``dotnet build $Solution $($buildSwitches -join " ")``."
 
 $errorLines = New-Object "System.Collections.Generic.List[string]"
@@ -72,6 +75,15 @@ if ($expectedErrorCodes)
     $fail = 0
     $report = New-Object "System.Text.StringBuilder" "`n"
 
+    if ($null -eq $errorCodes -or -not $errorCodes.Count)
+    {
+        $expectedCount = $expectedErrorCodes.Count
+        $expectedCodesJoined = $expectedErrorCodes -join ', '
+
+        Write-Output "::error::Expected $expectedCount error codes ($expectedCodesJoined), but none were displayed."
+        exit 1
+    }
+
     $length = [System.Math]::Max($errorCodes.Count, $expectedErrorCodes.Count)
     foreach ($index in 0..($length - 1))
     {
diff --git a/.github/actions/publish-nuget/New-NuGetPackage.ps1 b/.github/actions/publish-nuget/New-NuGetPackage.ps1
new file mode 100644
index 000000000..5b32c35b9
--- /dev/null
+++ b/.github/actions/publish-nuget/New-NuGetPackage.ps1
@@ -0,0 +1,34 @@
+<#
+.SYNOPSIS
+    Creates a NuGet package from each project in the sln file in the current directory.
+.DESCRIPTION
+    Uses "dotnet sln list" to get all projects in the current directory. This means the current directory must have 
+    exactly one sln file in it. Then calls "dotnet pack" for each csproj file with the provided arguments. If there is
+    a nuspec file in the project's directory too, then it is used to generate the package description instead of the 
+    regular auto-generation.
+.NOTES
+    We go through the projects individually in a foreach loop, because the "-p:NuspecFile=" parameter can't be passed 
+    to a solution.
+.EXAMPLE
+    New-NugetPackage @("--configuration:Release", "--warnaserror")
+    Calls "dotnet pack project.csproj --configuration:Release --warnaserror" on each project.
+#>
+
+param([array] $Arguments)
+
+foreach ($project in (dotnet sln list | Select-Object -Skip 2 | Get-Item))
+{
+    Push-Location $project.Directory
+
+    $nuspecFile = (Get-ChildItem *.nuspec).Name
+    if ($nuspecFile.Count -eq 1)
+    {
+        dotnet pack $project -p:NuspecFile="$nuspecFile" @Arguments
+    }
+    else
+    {
+        dotnet pack $project @Arguments
+    }
+
+    Pop-Location
+}
diff --git a/.github/actions/publish-nuget/action.yml b/.github/actions/publish-nuget/action.yml
index b9d6193f3..cd5a5e266 100644
--- a/.github/actions/publish-nuget/action.yml
+++ b/.github/actions/publish-nuget/action.yml
@@ -16,6 +16,10 @@ inputs:
     description: >
       Additional warning codes for the `-p:NoWarn=` argument of `dotnet pack`. The items can be 
       separated by any whitespace, including newlines.
+  dotnet-pack-include-symbols:
+    required: false
+    default: "true"
+    description: If set to "true", a symbol package will be created together with the NuGet package.
 secrets:
   API_KEY:
     required: true
@@ -55,6 +59,11 @@ runs:
       shell: pwsh
       run: dotnet restore -p:NuGetBuild=true --verbosity ${{ inputs.verbosity }}
 
+    - name: Generate nuspec file if needed
+      if: hashFiles('ConvertTo-Nuspec.ps1')
+      shell: pwsh
+      run: ./ConvertTo-Nuspec.ps1 '${{ steps.setup.outputs.publish-version }}'
+
     - name: Build
       uses: Lombiq/GitHub-Actions/.github/actions/build-dotnet@dev
       # Notes on the configuration:
@@ -82,6 +91,11 @@ runs:
             -p:DebugSymbols=true
             -p:DebugType=portable
 
+    - name: Actions prior to dotnet pack
+      if: hashFiles('Invoke-BeforePack.ps1')
+      shell: pwsh
+      run: ./Invoke-BeforePack.ps1
+
     - name: Pack
       shell: pwsh
       # Notes on the configuration apart from what's also for dotnet build:
@@ -96,24 +110,24 @@ runs:
         ${{ inputs.dotnet-pack-ignore-warning }}
         '@.Split() | ? { $_ }
 
-        $arguments = @(
+        New-NuGetPackage @(
             "--configuration:Release",
             "--warnaserror",
             "--no-restore",
             "--no-build",
-            "--output:artifacts",
+            "--output:" + (Join-Path $PWD artifacts),
             "--verbosity:${{ inputs.verbosity }}",
             "-p:NuGetBuild=true",
             "-p:Version=${{ steps.setup.outputs.publish-version }}",
+            "-p:NuspecProperties=version=${{ steps.setup.outputs.publish-version }}",
             "-p:GenerateDocumentationFile=True",
             "-p:NoWarn=$($noWarn -join '%3B')",
             "-p:TreatWarningsAsErrors=true",
             "-p:WarnOnPackingNonPackableProject=True",
-            "-p:IncludeSymbols=true",
+            "-p:IncludeSymbols=${{ inputs.dotnet-pack-include-symbols }}",
             "-p:SymbolPackageFormat=snupkg",
             "-p:NoDefaultExcludes=true"
         )
-        dotnet pack @arguments
 
     - name: Push with dotnet
       shell: pwsh
diff --git a/.github/actions/verify-submodule-pull-request/action.yml b/.github/actions/verify-submodule-pull-request/action.yml
index 807e82ac3..9bcd51500 100644
--- a/.github/actions/verify-submodule-pull-request/action.yml
+++ b/.github/actions/verify-submodule-pull-request/action.yml
@@ -25,10 +25,16 @@ runs:
         New-Item -ItemType File -Force $Profile | Out-Null
         Get-Content -Raw ${{ github.action_path }}/functions.ps1 >> $Profile
 
+    # We are using env for the title input in these steps because it realistically could contain quotes, apostrophes or
+    # even both. This way those don't need to be escaped.
     - name: Ensure Current PR Title Includes Issue Code
       shell: pwsh
-      run: Check-Current '${{ inputs.title }}'
+      env:
+        PR_TITLE: ${{ inputs.title }}
+      run: Check-Current $Env:PR_TITLE
 
     - name: Ensure Parent Repository Contains Matching PR
       shell: pwsh
-      run: Check-Parent '${{ inputs.repository }}' '${{ inputs.title }}'
+      env:
+        PR_TITLE: ${{ inputs.title }}
+      run: Check-Parent '${{ inputs.repository }}' $Env:PR_TITLE
diff --git a/.github/workflows/publish-nuget.yml b/.github/workflows/publish-nuget.yml
index 653a6756c..7e0ef4f7e 100644
--- a/.github/workflows/publish-nuget.yml
+++ b/.github/workflows/publish-nuget.yml
@@ -30,6 +30,11 @@ on:
         description: >
           Additional warning codes for the `-p:NoWarn=` argument of `dotnet pack`. The items can be 
           separated by any whitespace, including newlines.
+      dotnet-pack-include-symbols:
+        required: false
+        type: string
+        default: "true"
+        description: If set to "true", a symbol package will be created together with the NuGet package.
     secrets:
       # We can't access org secrets here so they need to be passed in, see:
       # https://github.community/t/resuable-called-workflow-environment-variables-secrets-and-trigger-event-access/207723/2
@@ -56,10 +61,11 @@ jobs:
         dotnet-version: ${{ inputs.dotnet-version }}
 
     - name: Publish to NuGet
-      uses: Lombiq/GitHub-Actions/.github/actions/publish-nuget@dev
+      uses: Lombiq/GitHub-Actions/.github/actions/publish-nuget@issue/OSOE-110
       with:
         source: ${{ inputs.source }}
         verbosity: ${{ inputs.verbosity }}
         dotnet-pack-ignore-warning: ${{ inputs.dotnet-pack-ignore-warning }}
+        dotnet-pack-include-symbols: ${{ inputs.dotnet-pack-include-symbols }}
       env:
         API_KEY: ${{ secrets.API_KEY }}
diff --git a/.github/workflows/test-analysis-failure.yml b/.github/workflows/test-analysis-failure.yml
index 3aa8a92ae..80013cc25 100644
--- a/.github/workflows/test-analysis-failure.yml
+++ b/.github/workflows/test-analysis-failure.yml
@@ -87,7 +87,7 @@ jobs:
       uses: Lombiq/GitHub-Actions/.github/actions/enable-corepack@dev
 
     - name: Build and Static Code Analysis
-      uses: Lombiq/GitHub-Actions/.github/actions/build-dotnet@dev
+      uses: Lombiq/GitHub-Actions/.github/actions/build-dotnet@issue/OSOE-110
       with:
         directory: ${{ inputs.build-directory }}
         verbosity: quiet
diff --git a/.github/workflows/verify-submodule-pull-request.yml b/.github/workflows/verify-submodule-pull-request.yml
index 15a5852d9..a34b915d3 100644
--- a/.github/workflows/verify-submodule-pull-request.yml
+++ b/.github/workflows/verify-submodule-pull-request.yml
@@ -13,6 +13,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Ensure Parent PR Exists
-      uses: Lombiq/GitHub-Actions/.github/actions/verify-submodule-pull-request@dev
+      uses: Lombiq/GitHub-Actions/.github/actions/verify-submodule-pull-request@issue/OSOE-110
       with:
         title: ${{ github.event.pull_request.title }}