Release 3.0.0-beta-4

- cxf-bundle-compatible replaced by cxf-rt-frontend-jaxws and cxf-rt-transports-http #20 (Tomas Dvorak)
- DnsLookupTimeout check enabled for timeout > 0 (#19) (Radim)
- DNS lookup of EET endpoints limited by timeout (default 2s) (Tomas Dvorak)
- fixed #17: CRL download is not parallel (Tomas Dvorak)
- test invalid response signature handling (Tomas Dvorak)
- created interceptors to properly validate signature based on message body (Petr Kalivoda)
- shutdown the executor service for CRLs download once finished in order to not block the application (Tomas Dvorak)