Update license years

Signed-off-by: William Giokas <1007380@gmail.com>
Date fixed

What the shit. That's not even a date format, man.

Signed-off-by: William Giokas <1007380@gmail.com>
update battery

Signed-off-by: William Giokas <1007380@gmail.com>
Version 0.2.1

clang works now!
Reordered functions to be slightly more intuitive
Created a `status' function that can be used to edit the status bar
without having to mess with main. I'll move it up by the #defines soon
enough.

Signed-off-by: William Giokas <1007380@gmail.com>
updated makefile

Puts the man page in the source dist now

Signed-off-by: William Giokas <1007380@gmail.com>
New systemd net device naming scheme

Updated the #defines

Signed-off-by: William Giokas <1007380@gmail.com>
Non-static net device name length

When user changes net device name from say, wlan0 to wlp0s0, there is
one more character in the net device name, causing the reading of
/proc/net/dev to fail miserably. Now it is calculated based on the names
length.

Signed-off-by: William Giokas <1007380@gmail.com>
Added in config file

I'll make it have the status function too, maybe, though for now I'll
keep that in dwmstatus.c. Configuring these options is good enough for
me.

Signed-off-by: William Giokas <1007380@gmail.com>