Update README.md's compatibility matrix with latest releases.

Author: KtorZ

README.md

@@ -18,7 +18,7 @@ aiken add aiken-lang/stdlib --version v2
 
 aiken's version                                                             | stdlib's version(s)
 ---                                                                         | ---
-`v1.1.3`<br/>`v1.1.4`<br/>`v1.1.5`<br/>`v1.1.6`<br/>`v1.1.7` <br/> `v1.1.9` | `>= 2.1.0`
+`v1.1.3`<br/>`v1.1.4`<br/>`v1.1.5`<br/>`v1.1.6`<br/>`v1.1.7` <br/> `v1.1.9` <br/> `v1.1.10` <br/> `v1.1.11` | `>= 2.1.0`
 `v1.1.1`<br/>`v1.1.2`                                                       | `>= 2.0.0` && `< 2.1.0`
 `v1.0.29-alpha`<br/>`v1.0.28-alpha`                                         | `>= 1.9.0` && `< 2.0.0`
 `v1.0.26-alpha`                                                             | `<= 1.8.0` && `< 1.9.0`