Trait for the interface of common persistent storage. This handles history
and persistent caches. Right now it is not threadsafe nor does it handle
the mutual exclusion of files between processes. Mutexes should be added
to be able to run multiple Ammonite processes on the same system.
Trait for the interface of common persistent storage. This handles history and persistent caches. Right now it is not threadsafe nor does it handle the mutual exclusion of files between processes. Mutexes should be added to be able to run multiple Ammonite processes on the same system.