Pinned tabs are not closeable by 'd'

Added binding 'DD' to force tab close which also closes pinned tabs

src/background/actions/operation.js

@@ -17,6 +17,8 @@ const exec = (operation, tab) => {
   switch (operation.type) {
   case operations.TAB_CLOSE:
     return tabs.closeTab(tab.id);
+  case operations.TAB_CLOSE_FORCE:
+    return tabs.closeTabForce(tab.id);
   case operations.TAB_REOPEN:
     return tabs.reopenTab();
   case operations.TAB_PREV:

src/background/tabs.js

@@ -9,6 +9,14 @@ browser.tabs.onActivated.addListener((activeInfo) => {
 });
 
 const closeTab = (id) => {
+  return browser.tabs.get(id).then((tab) => {
+    if(!tab.pinned) {
+      return browser.tabs.remove(id);
+    }
+  })
+};
+
+const closeTabForce = (id) => {
   return browser.tabs.remove(id);
 };
 
@@ -130,7 +138,8 @@ const duplicate = (id) => {
 };
 
 export {
-  closeTab, reopenTab, selectAt, selectByKeyword, getCompletions,
-  selectPrevTab, selectNextTab, selectFirstTab, selectLastTab, selectPrevSelTab,
-  reload, updateTabPinned, toggleTabPinned, duplicate
+  closeTab, closeTabForce, reopenTab, selectAt, selectByKeyword,
+  getCompletions, selectPrevTab, selectNextTab, selectFirstTab,
+  selectLastTab, selectPrevSelTab, reload, updateTabPinned,
+  toggleTabPinned, duplicate
 };