* Detail names now all start with an uppercase character and contain no underscores. Ideally these should be head-first camel case, though that was harder to check.
* Type names have the same rules, except they allow one underscore (to support a usage pattern Context_Type). The first character after the underscore is also uppercase.
* Use seconds instead of milliseconds in details.
Added a check when events are logged in simulation that logs a message to stderr if the first two rules above aren't followed.
This probably doesn't address every instance of the above problems, but all of the events I was able to hit in simulation pass the check.
`deleteFile` existed in IAsyncFileSystem, so an incremental delete function
seems to belong more as a virtual method on IAsyncFileSystem than a static
method on IAsyncFile, and the naming should match.
As long as we're here, change IAsyncFile to declare a virtual destructor, so
that it has good and proper C++ behavior. I presume this is what was vaguely
intended by the default constructor definition that previously existed?