Update crate hifmt

Author: bors

hi/fm/hifmt

@@ -1,2 +1,3 @@
 {"name":"hifmt","vers":"0.1.3","deps":[{"name":"hifmt-macros","req":"^0.2.1","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"}],"cksum":"c23690240b20414a1e776e6f8578509d5e105cdc2397451f8159fc63c9bcde8a","features":{},"yanked":false}
 {"name":"hifmt","vers":"0.1.4","deps":[{"name":"hifmt-macros","req":"^0.2.2","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"}],"cksum":"73199e61492ff89d8733b0a6f0abfe17e4fbda6d55f0b3680062b405abf72211","features":{},"yanked":false}
+{"name":"hifmt","vers":"0.1.5","deps":[{"name":"hifmt-macros","req":"^0.2.3","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"}],"cksum":"807297cd6ee6866cde25d973ec2c60dc25af3851310644f0261ce1dd987a317c","features":{"nolibc":[]},"yanked":false}