diff --git a/.github/workflows/pipeline.yml b/.github/workflows/pipeline.yml
new file mode 100644
index 00000000..d6783e21
--- /dev/null
+++ b/.github/workflows/pipeline.yml
@@ -0,0 +1,33 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - uses: actions/checkout@v2
+
+    # Runs a single command using the runners shell
+    - name: Run a one-line script
+      run: echo Hello, world!
+
+    # Runs a set of commands using the runners shell
+    - name: Run a multi-line script
+      run: |
+        echo Add other actions to build,
+        echo test, and deploy your project.
diff --git a/dub.json b/dub.json
index 050dba6c..50051917 100644
--- a/dub.json
+++ b/dub.json
@@ -50,11 +50,11 @@
             "versions-windows": ["Unicode"],
             "libs-windows": ["opengl32"],
             "dependencies": {
-                "derelict-gl3": "~>2.0.0-beta.7",
-                "derelict-ft": "~>2.0.0-beta.4"
+                "derelict-gl3": "~>2.0.0-beta.8",
+                "derelict-ft": "~>2.0.0-beta.5"
             },
             "dependencies-posix": {
-                "derelict-sdl2": "~>3.0.0-beta.7"
+                "derelict-sdl2": "~>3.0.0-beta.8"
             },
             "copyFiles-windows-x86_64": [
                 "libs/windows/x86_64/libfreetype-6.dll"
@@ -73,8 +73,8 @@
             "versions": ["USE_EXTERNAL"],
             "libs-windows": ["opengl32"],
             "dependencies": {
-                "derelict-gl3": "~>2.0.0-beta.7",
-                "derelict-ft": "~>2.0.0-beta.4"
+                "derelict-gl3": "~>2.0.0-beta.8",
+                "derelict-ft": "~>2.0.0-beta.5"
             }
         },
         {
@@ -84,9 +84,9 @@
             "versions-windows": ["Unicode" ,"NO_OPENGL"],
             "libs-windows": ["opengl32"],
             "dependencies-posix": {
-                "derelict-gl3": "~>2.0.0-beta.7",
-                "derelict-sdl2": "~>3.0.0-beta.7",
-                "derelict-ft": "~>2.0.0-beta.4"
+                "derelict-gl3": "~>2.0.0-beta.8",
+                "derelict-sdl2": "~>3.0.0-beta.8",
+                "derelict-ft": "~>2.0.0-beta.5"
             }
         },
         {
@@ -94,9 +94,9 @@
             "versions": ["USE_SDL", "USE_OPENGL", "USE_FREETYPE", "EmbedStandardResources"],
             "versions-windows": ["Unicode"],
             "dependencies": {
-                "derelict-gl3": "~>2.0.0-beta.7",
-                "derelict-ft": "~>2.0.0-beta.4",
-                "derelict-sdl2": "~>3.0.0-beta.7"
+                "derelict-gl3": "~>2.0.0-beta.8",
+                "derelict-ft": "~>2.0.0-beta.5",
+                "derelict-sdl2": "~>3.0.0-beta.8"
             },
             "copyFiles-windows-x86_64": [
                 "libs/windows/x86_64/libfreetype-6.dll", 
@@ -112,9 +112,9 @@
             "versions": ["USE_X11", "USE_FREETYPE", "EmbedStandardResources"],
             "versions-windows": ["Unicode"],
             "dependencies": {
-                "derelict-gl3": "~>2.0.0-beta.7",
-                "derelict-ft": "~>2.0.0-beta.4",
-                "x11": "~>1.0.17"
+                "derelict-gl3": "~>2.0.0-beta.8",
+                "derelict-ft": "~>2.0.0-beta.5",
+                "x11": "~>1.0.21"
             }
         },
         {
diff --git a/src/dlangui/dialogs/filedlg.d b/src/dlangui/dialogs/filedlg.d
index 395398f6..352838e4 100644
--- a/src/dlangui/dialogs/filedlg.d
+++ b/src/dlangui/dialogs/filedlg.d
@@ -373,7 +373,6 @@ class FileDialog : Dialog, CustomGridCellAdapter {
         if (ts.isNull) {
             return "----.--.-- --:--";
         } else {
-            //date = "%04d.%02d.%02d %02d:%02d:%02d".format(ts.year, ts.month, ts.day, ts.hour, ts.minute, ts.second);
             return "%04d.%02d.%02d %02d:%02d".format(ts.get.year, ts.get.month, ts.get.day, ts.get.hour, ts.get.minute);
         }
     }
diff --git a/src/dlangui/dom/cssparser.d b/src/dlangui/dom/cssparser.d
index 2331f1b6..69f6392d 100644
--- a/src/dlangui/dom/cssparser.d
+++ b/src/dlangui/dom/cssparser.d
@@ -82,13 +82,13 @@ struct CSSToken {
     string dimensionUnit;
     union {
         struct {
-            long intValue = 0; // for number and dimension
-            double doubleValue = 0; // for number and dimension
-            bool typeFlagInteger; // for number and dimension - true if number is integer, false if double
+            long intValue = 0; /// for number and dimension
+            double doubleValue = 0; /// for number and dimension
+            bool typeFlagInteger; /// for number and dimension - true if number is integer, false if double
         }
         struct {
-            uint unicodeRangeStart; // for unicodeRange (initialized to 0 via intValue=0)
-            uint unicodeRangeEnd; // for unicodeRange (initialized to 0 via intValue=0)
+            uint unicodeRangeStart; /// for unicodeRange (initialized to 0 via intValue=0)
+            uint unicodeRangeEnd; /// for unicodeRange (initialized to 0 via intValue=0)
         }
         bool typeFlagId; // true if identifier is valid ID
     }
diff --git a/src/dlangui/widgets/editors.d b/src/dlangui/widgets/editors.d
index 115841fb..a2741d12 100644
--- a/src/dlangui/widgets/editors.d
+++ b/src/dlangui/widgets/editors.d
@@ -3561,7 +3561,7 @@ class EditBox : EditWidgetBase {
             int i = cast(int)i_;
             int startingDifference = rc.left - _clientRect.left;
             wrapLineRect = rc;
-            wrapLineRect.offset(-1 * curSpan.accumulation(i, LineSpan.WrapPointInfo.Width), i * _lineHeight);
+            wrapLineRect.offset(-1 * curSpan.accumulation(cast(int)i, LineSpan.WrapPointInfo.Width), cast(int)i * _lineHeight);
             wrapLineRect.right = limitNumber(wrapLineRect.right,(rc.left + curSpan.wrapPoints[i].wrapWidth) - startingDifference);
             buf.fillRect(wrapLineRect, color);
         }