Proto commits in Tencent/phxpaxos

These 4 commits are when the Protocol Buffers files have changed:

Commit:1b964f7
Author:lynncui00

Learning speed control. SM data consistency check(sample on src/test).

The documentation is generated from this commit.

Commit:58a2a93
Author:lynncui00

new feature: batch propose(achieve high qps). enhancement and bugs fix.

Commit:36d084a
Author:lynncui00

version 0.9.0

Commit:1422330
Author:lynncui00

version 0.9