diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
new file mode 100644
index 0000000..0cafecb
--- /dev/null
+++ b/.github/workflows/go.yml
@@ -0,0 +1,23 @@
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.16
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v ./...
diff --git a/README.md b/README.md
index 3fd74a7..8f72526 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,15 @@ keybinding.Parse("ctrl+c")
 // get a list of keybindings
 keybinding.ParseAll("ctrl+A, ctrl+B, CTRL+ALT+C")
 ```
+
+# TODO
+
+* [ ] improve error messages, for example parsing invalid string `ctl + A`
+```
+-unsupported keybinding: KeyCtlA
++error parsing `ctl + A`: KeyCtlA is not defined
+```
+
+* [ ] uppercase single letter shortcuts are different from lowercase
+
+* [ ] do case insensitive detection for special key names
diff --git a/keybinding.go b/keybinding.go
index 7384a08..26ff222 100644
--- a/keybinding.go
+++ b/keybinding.go
@@ -18,13 +18,11 @@ var translate = map[string]string{
 	"~":        "Tilde",
 	"pageup":   "Pgup",
 	"pagedown": "Pgdn",
-	"pgup":     "Pgup",
 	"pgdown":   "Pgdn",
 	"up":       "ArrowUp",
 	"down":     "ArrowDown",
 	"right":    "ArrowRight",
 	"left":     "ArrowLeft",
-	"ctl":      "Ctrl",
 }
 
 var display = map[string]string{
@@ -116,6 +114,7 @@ var supportedKeybindings = map[string]gocui.Key{
 
 // Key contains all relevant information about the key
 type Key struct {
+	// Value is either `rune` for single key or `gocui.Key`
 	Value    interface{}
 	Modifier gocui.Modifier
 	Tokens   []string
diff --git a/keybinding_test.go b/keybinding_test.go
index 269736d..369e9dc 100644
--- a/keybinding_test.go
+++ b/keybinding_test.go
@@ -15,8 +15,8 @@ func TestParse(t *testing.T) {
 	}{
 		{"ctrl + A", gocui.KeyCtrlA, gocui.ModNone, ""},
 		{"Ctrl + a", gocui.KeyCtrlA, gocui.ModNone, ""},
-		{"Ctl + a", gocui.KeyCtrlA, gocui.ModNone, ""},
-		{"ctl + A", gocui.KeyCtrlA, gocui.ModNone, ""},
+		{"Ctl + a", 0, gocui.ModNone, "unsupported keybinding: KeyCtlA"},
+		{"ctl + A", 0, gocui.ModNone, "unsupported keybinding: KeyCtlA"},
 		{"f2", gocui.KeyF2, gocui.ModNone, ""},
 		{"ctrl +    [", gocui.KeyCtrlLsqBracket, gocui.ModNone, ""},
 		{"    ctrl +    ]   ", gocui.KeyCtrlRsqBracket, gocui.ModNone, ""},
@@ -36,6 +36,7 @@ func TestParse(t *testing.T) {
 		{"ctrl + alt + !", 0, gocui.ModAlt, "unsupported keybinding: KeyCtrl! (+1)"},
 		{"q", rune('q'), gocui.ModNone, ""},
 		{" q", rune('q'), gocui.ModNone, ""},
+		{" Q", rune('q'), gocui.ModNone, ""},
 	}
 
 	for idx, trial := range table {