Version 018-20170214:  
R013: Message and weight updated.
R113: Message updated.
R378: rule updated.

2017-02-23 07:01:59 Update weight for R010, now it is an Error in Production
2017-02-23 07:03:00 Update weight for R013, now it is a Warning in Qualification
2017-02-24 16:13:58 Update weight for R013, reset to Warning in Production
2017-07-03 06:48:16 Update weight for R013, change from Warning to Error in Production
2017-07-03 06:49:14 Update weight for R105, change from Info to Warning in Production

Version 018-20171206: 
Checks in the rules have not changed; 
Severity of some rules are changing for the 15/12/2017.

2017-12-15 07:00:00 Update severity for R001, R002, R003, R006, R007, R009; now it is an Error in Production
2017-12-15 07:00:00 Update severity for R251, R377,  R378, R559; now it is an Error in Production
2017-12-15 07:00:00 Update message and severity for R556, now it is an Info in Production
2017-12-15 07:00:00 Rules R100, R102, R115, R116 are disabled
2017-12-15 07:00:00 Underscore character is allowed in the domain name of an email address.
