v3.0.0

Breaking Changes:

• Node v10+ only (unless you polyfill Promise.prototype.finally support yourself)
• Changed MySQL driver from mysqljs/mysql to mysql/mysql-connector-nodejs
• MySQLService:
     * config argument has changed. See README.md for options.
     * pool property has been removed. A new property client basically replaces the pool.
     * query signature has changed from (query, options, callback) to (sql, args, callback, options)
     * wrapQuery has been removed
     * getConnection has been replaced with getSession
• CrudService:
     * connection option in crud methods has been replaced with session.
     * CrudService.MAX_VALUE constant class has been replaced with a simple string version.

Other Changes:

• Updated example app to work with v3 and demonstrated fields too
• Tests: Updated tests to validate v3 changes
• Updated dependencies and configurations
• Updated docs
• Updated travis-ci build to test both MySQL 5.7 and MySQL 8