Change the way the plugins are included (by file name, not class name).
Convert DovecotMailstore to a plugin, and generalize the main mailshears script to execute a series of plugins in succession.
Added error handling to the domain/account path methods.
Implemented get_domain_path and get_account_path in DovecotMailstore.
Only enumerate accounts in domains whose folders exist.
Added the get_domains_from_filesystem function to the DovecotMailstore class. Make get_accounts_from_filesystem take its list of domains as a parameter.
Initial commit.