Pass commandTimeout to Dapper

[iamgmd]

Add the ability to pass commandTimeout value through to Dapper on query.Execute. There are some use-cases where the default commandTimeout is not enough to run lengthy queries:-

example below but would be great to have this passed through as queryOptions or something:

public IEnumerable<TEntityType> Execute<TEntityType>(IDbConnection connection, Func<object[], TEntityType> map)
        {
            var results = connection.Query<TEntityType>(
                commandTimeout: 300,
                sql: this.ToString(),
                types: this._types.ToArray(),
                param: this.Parameters,
                map: map,
                splitOn: string.Join(",", this._splitOn)
            );
            return results.Where(e => e != null);
        }

[dougrday]

This was released in 0.4.2-beta.