Update drogon version to v1.0.0-beta11

Update drogon version to v1.0.0-beta10

Update drogon version to v1.0.0-beta9

Update drogon version to v1.0.0-beta8

Update drogon version to v1.0.0-beta7

Modify CMakeLists.txt

Optimize the batch mode of libpq. (drogonframework#205)

Bump version to v1.0.0-beta4 (drogonframework#201)

Change version to 1.0.0.beta3 (drogonframework#200)

Merge pull request drogonframework#191 from an-tao/dev

Bump version to v1.0.0-beta2