Add v0.12.0 download link (#41)

diff --git a/download.md b/download.md
index 93824b8..342773d 100644
--- a/download.md
+++ b/download.md
@@ -17,6 +17,10 @@
 
 | Version | Source | PGP | SHA |
 | ------- | ------ | --- | --- |
+| 0.12.0   | [apache-tvm-src-v0.12.0.tar.gz](https://www.apache.org/dyn/closer.lua/tvm/tvm-v0.12.0/apache-tvm-src-v0.12.0.tar.gz) | [.asc](https://downloads.apache.org/tvm/tvm-v0.12.0/apache-tvm-src-v0.12.0.tar.gz.asc) | [.sha512](https://downloads.apache.org/tvm/tvm-v0.12.0/apache-tvm-src-v0.12.0.tar.gz.sha512) |
+| 0.11.0   | [apache-tvm-src-v0.11.0.tar.gz](https://www.apache.org/dyn/closer.lua/tvm/tvm-v0.11.0/apache-tvm-src-v0.11.0.tar.gz) | [.asc](https://downloads.apache.org/tvm/tvm-v0.11.0/apache-tvm-src-v0.11.0.tar.gz.asc) | [.sha512](https://downloads.apache.org/tvm/tvm-v0.11.0/apache-tvm-src-v0.11.0.tar.gz.sha512) |
+| 0.10.0   | [apache-tvm-src-v0.10.0.tar.gz](https://www.apache.org/dyn/closer.lua/tvm/tvm-v0.10.0/apache-tvm-src-v0.10.0.tar.gz) | [.asc](https://downloads.apache.org/tvm/tvm-v0.10.0/apache-tvm-src-v0.10.0.tar.gz.asc) | [.sha512](https://downloads.apache.org/tvm/tvm-v0.10.0/apache-tvm-src-v0.10.0.tar.gz.sha512) |
+| 0.9.0   | [apache-tvm-src-v0.9.0.tar.gz](https://www.apache.org/dyn/closer.lua/tvm/tvm-v0.9.0/apache-tvm-src-v0.9.0.tar.gz) | [.asc](https://downloads.apache.org/tvm/tvm-v0.9.0/apache-tvm-src-v0.9.0.tar.gz.asc) | [.sha512](https://downloads.apache.org/tvm/tvm-v0.9.0/apache-tvm-src-v0.9.0.tar.gz.sha512) |
 | 0.8.0   | [apache-tvm-src-v0.8.0.tar.gz](https://www.apache.org/dyn/closer.lua/tvm/tvm-v0.8.0/apache-tvm-src-v0.8.0.tar.gz) | [.asc](https://downloads.apache.org/tvm/tvm-v0.8.0/apache-tvm-src-v0.8.0.tar.gz.asc) | [.sha512](https://downloads.apache.org/tvm/tvm-v0.8.0/apache-tvm-src-v0.8.0.tar.gz.sha512) |