Merge pull request #3538 from karalabe/cycle-1.5.7

params, VERSION: start 1.5.7 release cycle

VERSION

-1.5.6
+1.5.7

params/version.go

@@ -21,8 +21,8 @@ import "fmt"
 const (
 	VersionMajor = 1          // Major version component of the current release
 	VersionMinor = 5          // Minor version component of the current release
-	VersionPatch = 6        // Patch version component of the current release
-	VersionMeta  = "stable" // Version metadata to append to the version string
+	VersionPatch = 7          // Patch version component of the current release
+	VersionMeta  = "unstable" // Version metadata to append to the version string
 )
 
 // Version holds the textual version string.