mockingbirdnest/Principia — pull request #253 by eggrobin (2014-11-01 16:24:48+00:00)
Title: Version in log

Example contents of `base/version.hpp`:
```cpp
#pragma once

namespace principia {
namespace base {

char const kBuildDate[] = "2014-11-01T16:21:12.3692967Z";
char const kVersion[] =
"57edf100d45d9f72fdc85cbc58041cdcdb488339";

} // namespace base
} // namespace principia
```