Fix typo in the README, remove dmd 2.072 support

.travis.yml

@@ -10,7 +10,6 @@ d:
   - dmd-2.075.0
   - dmd-2.074.1
   - dmd-2.073.2
-  - dmd-2.072.2
 
 env: 
   matrix:

README.md

@@ -127,7 +127,7 @@ foreach (el; arr[0 .. 5])
 {
 }
 
-int i = arr[7]; // Access 7th element.
+int i = arr[7]; // Access 8th element.
 ```
 
 There are more containers in the `tanya.container` package.
@@ -142,7 +142,6 @@ There are more containers in the `tanya.container` package.
 | 2.075.0 |
 | 2.074.1 |
 | 2.073.2 |
-| 2.072.2 |
 
 ### Current status
 

appveyor.yml

@@ -21,12 +21,6 @@ environment:
     - DC: dmd
       DVersion: 2.073.2
       arch: x86
-    - DC: dmd
-      DVersion: 2.072.2
-      arch: x64
-    - DC: dmd
-      DVersion: 2.072.2
-      arch: x86
 
 skip_tags: true