diff --git a/.appveyor.yml b/.appveyor.yml
index deb4bca4..aeb76e00 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,8 +1,23 @@
 version: 2.3.18-branch-{branch}-build-{build}
+
+# Skipping commits affecting specific files (GitHub only). More details here: https://www.appveyor.com/docs/appveyor-yml
+skip_commits:
+  files:
+    - .github/*
+    - .travis/*
+    - .tx/*
+    - webclient/*
+    - .*ignore
+    - .gitlab-ci.yml
+    - .travis.yml
+    - '*.md'
+    
 image: Visual Studio 2015
+
 cache:
     - c:\protobuf-release
     - c:\zlib-release
+    
 environment:
     matrix:
         - qt_ver: 5.9\msvc2015_64
@@ -17,6 +32,7 @@ environment:
           cmake_generator: Visual Studio 14 2015
           cmake_toolset: v140_xp # use the windows XP compatible toolset
           target_arch: x86
+          
 install:
     - ps: |
         if (Test-Path c:\protobuf-release) {
@@ -37,8 +53,10 @@ install:
             cmake . -G "$env:cmake_generator" -T "$env:cmake_toolset" -DCMAKE_INSTALL_PREFIX=c:/zlib-release
             msbuild INSTALL.vcxproj /p:Configuration=Release
         }
+        
 services:
     - mysql
+    
 build_script:
     - ps: |
         New-Item -ItemType directory -Path $env:APPVEYOR_BUILD_FOLDER\build
@@ -59,15 +77,17 @@ build_script:
         (New-Object PSObject | Add-Member -PassThru NoteProperty bin $new_name | Add-Member -PassThru NoteProperty cmake $cmake_name | Add-Member -PassThru NoteProperty commit $env:APPVEYOR_REPO_COMMIT) | ConvertTo-JSON | Out-File -FilePath "latest-$env:target_arch" -Encoding ASCII
         Push-AppveyorArtifact "latest-$env:target_arch"
         $version = $matches['content']
+        
 test: off
+
 deploy:
-  description: "Dev build of Cockatrice"
   provider: GitHub
   auth_token:
     secure: p+7wPVry2XEa6TBm9XH8IaQZbBmXQ/J2ldbGmcIxUZD3NkkPrSRRlmE7Of1CBBIO
+  description: "Dev build of Cockatrice"
   artifact: /.*\.exe/
   draft: false
   prerelease: true
   force_update: true
   on:
-    appveyor_repo_tag: true
\ No newline at end of file
+    appveyor_repo_tag: true
diff --git a/.dockerignore b/.dockerignore
index 65c13ebf..075acd68 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,11 +1,9 @@
 .git/
-CONTRIBUTING.md
-Dockerfile
-TODO.md
 build/
+.github/
+.travis/
+.tx/
 cockatrice/
 doc/
 oracle/
-sounds/
-travis-compile.sh
-travis-dependencies.sh
+Dockerfile
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 11b4fb59..dfc469ec 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -2,8 +2,8 @@
 
 ### Compatibility ###
 
-Cockatrice is compiled on all platform using C++11, even if the majority of the
-code is written in C++03.
+Cockatrice is compiled on all platform using <kbd>C++11</kbd>, even if the majority of the
+code is written in <kbd>C++03</kbd>.
 
 For consistency, use Qt data structures where possible, such as `QString` over
 `std::string` or `QList` over `std::vector`.
diff --git a/.travis.yml b/.travis.yml
index 7a296f67..c03db5a1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -56,3 +56,5 @@ notifications:
     on_failure: change
     on_start: never
     
+# official validator for travis.yml config files: https://yaml.travis-ci.org
+# travis documentation: https://docs.travis-ci.com/user/customizing-the-build
diff --git a/.tx/config b/.tx/config
index 57a4f790..d5e37a00 100644
--- a/.tx/config
+++ b/.tx/config
@@ -10,4 +10,3 @@ source_lang = en
 file_filter = oracle/translations/oracle_<lang>.ts
 source_file = oracle/translations/oracle_en.ts
 source_lang = en
-
diff --git a/README.md b/README.md
index ac7148e3..5e518c05 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ We offer downloads for all full releases (recommended) and the latest developmen
 
 - Latest full release (**recommended**): [![Download from GitHub Releases](https://img.shields.io/github/release/cockatrice/cockatrice.svg)](https://github.com/cockatrice/cockatrice/releases/latest) [![Download Count on Latest Release](https://img.shields.io/github/downloads/cockatrice/cockatrice/latest/total.svg)](https://tooomm.github.io/github-release-stats/?username=Cockatrice&repository=Cockatrice)<br>
 
-- Latest development version: [![Download from GitHub Pre-Releases](https://img.shields.io/github/release/cockatrice/cockatrice/all.svg)](https://github.com/cockatrice/cockatrice/releases)
+- Latest development version: [![Download from GitHub Pre-Releases](https://img.shields.io/github/release/cockatrice/cockatrice/all.svg)](https://github.com/cockatrice/cockatrice/releases) 
    - Development builds may not be stable and/or contain several bugs.
    - If you'd like to be a Cockatrice Beta Tester, use this version.
    - More information can be [found here](https://github.com/Cockatrice/Cockatrice/wiki/Release-Channels)