bump version

Author: brentp

README.md

@@ -25,7 +25,7 @@ when appropriate, the output files are bgzipped and indexed for ease of use.
 ## usage
 
 ```
-mosdepth 0.3.6
+mosdepth 0.3.9
 
   Usage: mosdepth [options] <prefix> <BAM-or-CRAM>
 

mosdepth.nim

@@ -794,7 +794,7 @@ when(isMainModule):
   when not defined(release) and not defined(lto):
     stderr.write_line "[mosdepth] WARNING: built in debug mode; will be slow"
 
-  let version = "mosdepth 0.3.8"
+  let version = "mosdepth 0.3.9"
   let env_fasta = getEnv("REF_PATH")
   var doc = format("""
   $version