0.4.0

• all barlibs: double-buffer everything to avoid unneeded redraws
• “luastatus.map_get_handle” function was removed
• moved “contrib/widget-examples/” directory to “examples/”
• new plugin: “udev”
• new derived plugin: “backlight-linux”
• new barlib: “stdout”
• new plugin: “pulse”
• new plugin: “network-linux”
• “alsa” plugin: added “self-pipe” option/“wake_up()” function
• “timer” plugin: new “push_period()” function
• new widget example: backlight.lua
• new widget example: network-rate.lua
• new widget example: tor.lua
• new widget example: pulse.lua
• new widget example: cpu-temperature.lua
• new widget example: alsa-gauge.lua
• new widget example: pulse-gauge.lua
• new widget example: alsa-interactive-gauge.lua
• new widget example: pulse-interactive-gauge.lua
• new widget example: wireless.lua
• new widget example: ip.lua
• “examples/i3/moonscript”: examples of using MoonScript with luastatus
• “i3”, “lemonbar” barlibs: barlib functions are now thread-safe
• “i3” barlib: properly marshal JSON arrays/maps to Lua
• all the documentation was moved to the .rst file format
• man pages are now auto-generated from .rst files using “rst2man” utility
• various bug fixes