提一点小建议:内置的打印日志能不能暴露方法，提供打印的级别？ about rxhttp HOT 2 CLOSED

可以参考下OkGo的打印日志，很详细，类似于这种：
E/POWER: --> POST https://.................... http/1.1 E/POWER: Content-Type: application/x-www-form-urlencoded E/POWER: Content-Length: 35 E/POWER: passid: z7gcawmtu4g1blzgnzftns5435638tdl E/POWER: sign: BD6C85FC311A437E6EFC08D1D516537D E/POWER: timestamp: 1576831956 E/POWER: E/POWER: body:article_id=932&timestamp=1576831956 E/POWER: --> END POST E/POWER: <-- 200 OK https://.................../getIndexPic (5430ms） E/POWER: Date: Fri, 20 Dec 2019 08:52:37 GMT E/POWER: Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips E/POWER: Access-Control-Allow-Origin: http://172.10.10.253:8099 E/POWER: Access-Control-Allow-Method: POST,GET E/POWER: Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE E/POWER: Access-Control-Allow-Headers: x-requested-with,content-type E/POWER: Vary: Accept-Encoding E/POWER: Keep-Alive: timeout=5, max=100 E/POWER: Connection: Keep-Alive E/POWER: Content-Type: text/html; charset=utf-8 E/POWER: Cache-Control: public, max-age=60 E/POWER: E/POWER: body:{.....}

from rxhttp.

这是目前RxHttp日志打印结构，对比okgo，不是很明白你是觉得打印信息少了什么？还是说格式不太习惯。另外，对于Verbose信息过多，我个人的习惯是过滤 RxHttp，这样日志就一目了然，当然，对于暴露设置打印级别的方法，后续版本会考虑，感谢提出。

from rxhttp.