diff --git a/CMakeLists.txt b/CMakeLists.txt
index 20a1aed..447fc6e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,9 @@ include ( lua )
 
 install_lua_module ( log                                lua/log.lua                                 )
 install_lua_module ( log.formatter.concat               lua/log/formatter/concat.lua                )
+install_lua_module ( log.formatter.default              lua/log/formatter/default.lua               )
 install_lua_module ( log.formatter.format               lua/log/formatter/format.lua                )
+install_lua_module ( log.formatter.pformat              lua/log/formatter/pformat.lua               )
 install_lua_module ( log.formatter.mix                  lua/log/formatter/mix.lua                   )
 install_lua_module ( log.logformat.default              lua/log/logformat/default.lua               )
 install_lua_module ( log.logformat.proxy                lua/log/logformat/proxy.lua                 )
@@ -40,6 +42,7 @@ install_lua_module ( log.writer.net.zmq._private.impl   lua/log/writer/net/zmq/_
 install_lua_module ( log.writer.net.zmq.pub             lua/log/writer/net/zmq/pub.lua              )
 install_lua_module ( log.writer.net.zmq.push            lua/log/writer/net/zmq/push.lua             )
 install_lua_module ( log.writer.net.zmq.srv.pub         lua/log/writer/net/zmq/srv/pub.lua          )
+install_lua_module ( log.writer.prefix                  lua/log/writer/prefix.lua                   )
 install_lua_module ( log.writer.stderr                  lua/log/writer/stderr.lua                   )
 install_lua_module ( log.writer.stdout                  lua/log/writer/stdout.lua                   )
 
diff --git a/dist.info b/dist.info
index 26885e1..4a749d8 100644
--- a/dist.info
+++ b/dist.info
@@ -1,5 +1,5 @@
 name = "lua-log"
-version = "0.1.4"
+version = "0.1.6"
 
 desc = "Asynchronous logging library"
 author = "Alexey Melnichuk"
diff --git a/lua/log.lua b/lua/log.lua
index 22af7c8..bb93f4b 100644
--- a/lua/log.lua
+++ b/lua/log.lua
@@ -3,7 +3,7 @@
 --
 
 local _COPYRIGHT = "Copyright (C) 2013-2016 Alexey Melnichuk";
-local _VERSION   = "0.1.6-dev"
+local _VERSION   = "0.1.6"
 
 local table  = require "table"
 local string = require "string"
@@ -95,6 +95,8 @@ function Log.new(max_lvl, writer, formatter, logformat)
 
   function logger.format() return logformat end
 
+  function logger.lvl() return max_lvl end
+
   function logger.set_writer(value)
     assert(value)
     writer, value = value, writer
@@ -102,11 +104,13 @@ function Log.new(max_lvl, writer, formatter, logformat)
   end
 
   function logger.set_formatter(value)
+    assert(value)
     formatter, value = value, formatter
     return value
   end
 
   function logger.set_format(value)
+    assert(value)
     logformat, value = value, logformat
     return value
   end
@@ -134,8 +138,6 @@ function Log.new(max_lvl, writer, formatter, logformat)
     return true
   end
 
-  function logger.lvl() return max_lvl end
-
   assert(logger.set_lvl(max_lvl))
 
   loggers_list[logger] = true;
diff --git a/rockspecs/lua-log-0.1.6-1.rockspec b/rockspecs/lua-log-0.1.6-1.rockspec
new file mode 100644
index 0000000..5404c06
--- /dev/null
+++ b/rockspecs/lua-log-0.1.6-1.rockspec
@@ -0,0 +1,78 @@
+package = "lua-log"
+version = "0.1.6-1"
+source = {
+  url = "https://github.com/moteus/lua-log/archive/v0.1.6.zip",
+  dir = "lua-log-0.1.6",
+}
+
+description = {
+  summary = "Asynchronous logging library",
+  detailed = [[
+  ]],
+  homepage = "https://github.com/moteus/lua-log",
+  license  = "MIT/X11",
+}
+
+dependencies = {
+  "lua >= 5.1, < 5.4",
+  "date >= 2.0",
+  -- "lpeg >= 0.10.0",
+  -- "llthread >= 1.2",
+  -- "luasocket >= 2.0.1",
+  -- "lzmq >= 0.4.2",
+  -- "sendmail >= 0.1.0",
+  -- "lanes >= 3.5",
+  -- "ansicolors >= 1.0",
+}
+
+build = {
+  type = "builtin",
+  copy_directories = {
+    "examples",
+    "utils",
+    "doc",
+  },
+  modules = {
+    ["log"                         ] = "lua/log.lua",
+    ["log.formatter.concat"        ] = "lua/log/formatter/concat.lua",
+    ["log.formatter.default"       ] = "lua/log/formatter/default.lua",
+    ["log.formatter.format"        ] = "lua/log/formatter/format.lua",
+    ["log.formatter.pformat"       ] = "lua/log/formatter/pformat.lua",
+    ["log.formatter.mix"           ] = "lua/log/formatter/mix.lua",
+    ["log.logformat.default"       ] = "lua/log/logformat/default.lua",
+    ["log.logformat.proxy"         ] = "lua/log/logformat/proxy.lua",
+    ["log.logformat.proxy.pack"    ] = "lua/log/logformat/proxy/pack.lua",
+    ["log.logformat.syslog"        ] = "lua/log/logformat/syslog.lua",
+    ["log.writer.async._private.server"    ] = "lua/log/writer/async/_private/server.lua",
+    ["log.writer.async.lane"       ] = "lua/log/writer/async/lane.lua",
+    ["log.writer.async.server.lane"] = "lua/log/writer/async/server/lane.lua",
+    ["log.writer.async.server.udp" ] = "lua/log/writer/async/server/udp.lua",
+    ["log.writer.async.server.zmq" ] = "lua/log/writer/async/server/zmq.lua",
+    ["log.writer.async.udp"        ] = "lua/log/writer/async/udp.lua",
+    ["log.writer.async.zmq"        ] = "lua/log/writer/async/zmq.lua",
+    ["log.writer.console"          ] = "lua/log/writer/console.lua",
+    ["log.writer.console.color"    ] = "lua/log/writer/console/color.lua",
+    ["log.writer.file"             ] = "lua/log/writer/file.lua",
+    ["log.writer.file.by_day"      ] = "lua/log/writer/file/by_day.lua",
+    ["log.writer.file.private.impl"] = "lua/log/writer/file/private/impl.lua",
+    ["log.writer.file.roll"        ] = "lua/log/writer/file/roll.lua",
+    ["log.writer.filter"           ] = "lua/log/writer/filter.lua",
+    ["log.writer.filter.lvl.eq"    ] = "lua/log/writer/filter/lvl/eq.lua",
+    ["log.writer.filter.lvl.le"    ] = "lua/log/writer/filter/lvl/le.lua",
+    ["log.writer.format"           ] = "lua/log/writer/format.lua",
+    ["log.writer.list"             ] = "lua/log/writer/list.lua",
+    ["log.writer.net.server.udp"   ] = "lua/log/writer/net/server/udp.lua",
+    ["log.writer.net.server.zmq"   ] = "lua/log/writer/net/server/zmq.lua",
+    ["log.writer.net.smtp"         ] = "lua/log/writer/net/smtp.lua",
+    ["log.writer.net.udp"          ] = "lua/log/writer/net/udp.lua",
+    ["log.writer.net.zmq"          ] = "lua/log/writer/net/zmq.lua",
+    ["log.writer.net.zmq._private.compat"  ] = "lua/log/writer/net/zmq/_private/compat.lua",
+    ["log.writer.net.zmq._private.impl"    ] = "lua/log/writer/net/zmq/_private/impl.lua",
+    ["log.writer.net.zmq.pub"      ] = "lua/log/writer/net/zmq/pub.lua",
+    ["log.writer.net.zmq.push"     ] = "lua/log/writer/net/zmq/push.lua",
+    ["log.writer.net.zmq.srv.pub"  ] = "lua/log/writer/net/zmq/srv/pub.lua",
+    ["log.writer.prefix"           ] = "lua/log/writer/prefix.lua",
+    ["log.writer.stderr"           ] = "lua/log/writer/stderr.lua",
+    ["log.writer.stdout"           ] = "lua/log/writer/stdout.lua",
+  }
+}
diff --git a/rockspecs/lua-log-scm-0.rockspec b/rockspecs/lua-log-scm-0.rockspec
index 9e1223b..8b18f92 100644
--- a/rockspecs/lua-log-scm-0.rockspec
+++ b/rockspecs/lua-log-scm-0.rockspec
@@ -30,6 +30,7 @@ build = {
   copy_directories = {
     "examples",
     "utils",
+    "doc",
   },
   modules = {
     ["log"                         ] = "lua/log.lua",
@@ -75,6 +76,3 @@ build = {
     ["log.writer.stdout"           ] = "lua/log/writer/stdout.lua",
   }
 }
-
-
-