v3.0.0

• ⚠️ Breaking: Drop support for Nginx version < 1.8.0 [1f5d635]
• ⚠️ Breaking: Switch from sites-enabled/available to conf.d [306af36]
• ⚠️ Breaking: Refactor h5bp/ directives to strict atomic structure [496af1c] [2d13505]
• ⚠️ Breaking: Refactor and modernize TLS/SSL directives [1b2b4eb...d2531ac]
• ⚠️ Breaking: Move common header directives from location directives to mapped values based on MIME-types [6dd4cc2]
• 🎉 Tests! Add tests and configure continuous integration to help community contributions [52e1353]
• Replace location block add_header directives with expires directives [135d093]
• Support hashed asset names [1b2b4eb]
• Update many values in MIME-types table [62dbd41] [08272b6] [9c6aad8] [b244111] [94262e7] [b244111] [fe7ff95]
• Remove outdated inline script [8a4a1ce]
• Improve inline comments and review documentation.