Prepare 1.1.0 release (#1274)

* Update bucket_sort.c

* Fix the comments in quick_sort.c

* Update the announce badge

* Sync zh and zh-hant versions

* Update contributors list.

* Sync zh and zh-hant versions.

* Sync zh and zh-hant versions.

* Update the contributors list

* Update the version number

zh-hant/codes/kotlin/chapter_hashing/array_hash_map.kt

@@ -68,7 +68,8 @@ class ArrayHashMap {
     fun valueSet(): MutableList<String> {
         val valueSet = mutableListOf<String>()
         for (pair in buckets) {
-            pair?.let { valueSet.add(it._val) }
+            if (pair != null)
+                valueSet.add(pair._val)
         }
         return valueSet
     }
@@ -78,7 +79,7 @@ class ArrayHashMap {
         for (kv in pairSet()) {
             val key = kv.key
             val _val = kv._val
-            println("${key} -> ${_val}")
+            println("$key -> $_val")
         }
     }
 }