Update crate mini_log

Author: bors

mi/ni/mini_log

@@ -2,3 +2,4 @@
 {"name":"mini_log","vers":"0.2.0","deps":[],"cksum":"6e8f306703b62d25e05993d414dbc83d82883a228326fc5a5afda9637f14f916","features":{},"yanked":false}
 {"name":"mini_log","vers":"0.3.0","deps":[],"cksum":"de5bd0c9d62cf3bb51d23dcc40cb6e1edb4660262811697429195ce02088fadb","features":{},"yanked":false}
 {"name":"mini_log","vers":"0.3.1","deps":[],"cksum":"7d58a72a8db94bb6d884133ffaa78b179304464ef17ba47badfa6f0a87ac37f4","features":{},"yanked":false}
+{"name":"mini_log","vers":"0.4.0","deps":[],"cksum":"7694c97f5a7fb9490062888f6435f3600d530702c862afd411c89820ce67aac9","features":{"no_std":[]},"yanked":false}