Remove dependency on CGI::Application in SRU::Server

[nichtich]

SRU 1.00 does not explicitly depend on CGI::Application, but SRU::Server requires CGI::Application. I am not sure how to best change SRU::Server, but I'd like to modify the current connection to CGI::Application and better support PSGI. Any suggestions?

How about moving base and methods of CGI::Application from SRU::Server to a new module CGI::Application::SRU and create another module Plack::App::SRU, both to be used this way:

{
    package MyApp;
    use base qw(SRU::Server); # does not require CGI::Application 

    sub explain { ... }
    sub scan { ... }
    sub retrieve { ... }
}

Use as CGI::Application:

use MyApp;
MyApp->new->as_cgiapp->run; # requires CGI::Application

Use as PSGI application (requires Plack::App::SRU):

use MyApp;
MyApp->new->as_psgi;