Watch mode only watches sources from last configuration file when passing multiple paths to configuration files using --config command line options

[fvazquez-travelperk]

Documentation states that passing multiple paths and adding multiple configurations inside the same file are equivalent. But in the first case, if sourcery is invoked with --watch, only the source files defined inside the last processed file are actually watched.
That forces us to merge all configuration keys from several files into a single file before invoking sourcery as a workaround.

If multiple --config flags are not intended to work with --watch I think the documentation should reflect that.