Update the repository from fork laget.se/ical net (#595)

* Update the repository from fork `laget.se/ical net` 

**Apply the following change after the update:**

* Remove net5.0 as target framework from all lprojects
* Update nuget-specific settings
  * Update icon.png file used in Ical.Net.nuspec
  * Update package metadata
  * Remove net5.0 package target framework
  * Update README.md to reflect the current project state with ical-org
* Fix: Update publish.yml to create deterministic builds for packages,
update action versions
* Update GitHub actions to reflect the changed main branch name
* Update `readme.md`
* Update CI workflows `publish.yml` and `tests.yml`
  - Changed `runs-on` to `ubuntu-latest`.
  - Added `fetch-depth: 0` to `actions/checkout@v4` in both workflows.
  - Added `Get version tag` step in `publish.yml`.
  - Included `-p:nowarn=1591` in `Build` steps to suppress warnings.
  - Changed `Test` verbosity to `quiet` in both workflows.
- Updated `Build and pack for publishing` in `publish.yml` to use
`VERSION`.
- Updated `Store artifacts` step in `publish.yml` for new naming
convention.
- Updated `Push package to NuGet` step in `publish.yml` to use
`VERSION`.
* Update ProdId constant and NodaTime package version
* Add back assembly signing to projects and include strong name key
* Update `Ical.Net.Tests.csproj` and `Ical.Net.csproj` to include
assembly signing by adding `SignAssembly` and
`AssemblyOriginatorKeyFile` properties.
* Replace `InternalsVisibleTo` with `AssemblyAttribute` including a
public key in `Ical.Net.csproj`.
  * Add `IcalNetStrongnameKey.snk` for strong name key.
  * Move InternalsVisibleTo from AssemblyInfo.cs to project file
* Add class `RegexDefaults` and update all Regex with
`RegexDefaults.Timeout` which is set to 200 milliseconds

**This PR closes the following PRs which have previously been merged
into `laget.se/ical net`**
Closes #491
Closes #443
Closes #525
Closes #528
Closes #571 
Closes #579
Closes #584
Closes #595

.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*]
+charset = utf-8-bom
+end_of_line = crlf
+indent_style = space
+trim_trailing_whitespace = true
+
+[*.cs]
+indent_size = 4

.gitattributes

@@ -1,63 +1,6 @@
-###############################################################################
-# Set default behavior to automatically normalize line endings.
-###############################################################################
+# Auto detect text files and perform LF normalization
+# http://davidlaing.com/2012/09/19/customise-your-gitattributes-to-become-a-git-ninja/
 * text=auto
 
-###############################################################################
-# Set default behavior for command prompt diff.
-#
-# This is need for earlier builds of msysgit that does not have it on by
-# default for csharp files.
-# Note: This is only used by command line
-###############################################################################
-#*.cs     diff=csharp
+*.cs     diff=csharp
 
-###############################################################################
-# Set the merge driver for project and solution files
-#
-# Merging from the command prompt will add diff markers to the files if there
-# are conflicts (Merging from VS is not affected by the settings below, in VS
-# the diff markers are never inserted). Diff markers may cause the following 
-# file extensions to fail to load in VS. An alternative would be to treat
-# these files as binary and thus will always conflict and require user
-# intervention with every merge. To do so, just uncomment the entries below
-###############################################################################
-#*.sln       merge=binary
-#*.csproj    merge=binary
-#*.vbproj    merge=binary
-#*.vcxproj   merge=binary
-#*.vcproj    merge=binary
-#*.dbproj    merge=binary
-#*.fsproj    merge=binary
-#*.lsproj    merge=binary
-#*.wixproj   merge=binary
-#*.modelproj merge=binary
-#*.sqlproj   merge=binary
-#*.wwaproj   merge=binary
-
-###############################################################################
-# behavior for image files
-#
-# image files are treated as binary by default.
-###############################################################################
-#*.jpg   binary
-#*.png   binary
-#*.gif   binary
-
-###############################################################################
-# diff behavior for common document formats
-# 
-# Convert binary document formats to text before diffing them. This feature
-# is only available from the command line. Turn it on by uncommenting the 
-# entries below.
-###############################################################################
-#*.doc   diff=astextplain
-#*.DOC   diff=astextplain
-#*.docx  diff=astextplain
-#*.DOCX  diff=astextplain
-#*.dot   diff=astextplain
-#*.DOT   diff=astextplain
-#*.pdf   diff=astextplain
-#*.PDF   diff=astextplain
-#*.rtf   diff=astextplain
-#*.RTF   diff=astextplain

.github/workflows/publish.yml

@@ -0,0 +1,62 @@
+name: Publish
+# This job builds and and publishes the package to NuGet.
+# It depends on the included tests job to complete successfully.
+# The version number is determined by the latest tag for the 'main' branch selected with workflow dispatch.
+on:
+  workflow_dispatch: {}
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Fetch all history for all tags and branches
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: |
+          8.0.x
+          6.0.x
+          3.1.x
+    - name: Restore dependencies
+      run: dotnet restore
+    - name: Build
+      run: dotnet build --no-restore --configuration Release -p:nowarn=1591
+    - name: Test
+      run: dotnet test --no-build --configuration Release --verbosity quiet
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: tests
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Fetch all history for all tags and branches
+    - uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+    - name: Get version tag
+      # The latest tag for the selected branch.
+      # Get it and strip off any leading 'v' from the version tag
+      run: | 
+         Version=$(git describe --tags --abbrev=0 | sed 's/^v//')
+         echo "VERSION=$Version" >> $GITHUB_ENV
+         echo "Version: $Version"
+    - name: Build and pack for publishing
+      run: |
+        dotnet restore
+        dotnet build --configuration Release Ical.Net/Ical.Net.csproj -p:Version=${{env.VERSION}} -p:FileVersion=${{env.VERSION}}.${{github.run_number}} -p:IncludeSymbols=true -p:SymbolPackageFormat=snupkg -p:ContinuousIntegrationBuild=true
+        dotnet pack --configuration Release Ical.Net/Ical.Net.csproj -p:Version=${{env.VERSION}} -p:IncludeSymbols=true -p:SymbolPackageFormat=snupkg --no-build -p:PackageVersion=${{env.VERSION}}.${{github.run_number}} -p:NuspecFile=Ical.Net.nuspec
+    - name: Store artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: ICal.Net_pkg_${{env.VERSION}}.${{github.run_number}}
+        path: |
+          Ical.Net/bin/Release/**/*.nupkg
+          Ical.Net/bin/Release/**/*.snupkg
+    - name: Push package to NuGet
+      # Does not fail, if the package already exists
+      run: dotnet nuget push Ical.Net/bin/Release/Ical.Net.${{env.VERSION}}.nupkg --api-key ${{secrets.NUGET_API_KEY}} --source https://api.nuget.org/v3/index.json --skip-duplicate

.github/workflows/tests.yml

@@ -0,0 +1,34 @@
+name: Tests
+
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the main branch
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Fetch all history for all tags and branches
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: |
+          8.0.x
+          6.0.x
+          3.1.x
+    - name: Restore dependencies
+      run: dotnet restore
+    - name: Build
+      run: dotnet build --no-restore --configuration Release -p:nowarn=1591
+    - name: Test
+      run: dotnet test --no-build --configuration Release --verbosity quiet