lint: Fix whitespace issues

Remove excess whitespace and remove related ignores.

.luacheckrc

@@ -15,9 +15,6 @@ return {
         "423", -- Shadowing a loop variable.
         "423", -- Shadowing a loop variable.
         "432", -- Shadowing an upvalue argument.
-        "611", -- A line consists of nothing but whitespace.
-        "612", -- A line contains trailing whitespace.
-        "614", -- Trailing whitespace in a comment.
         "631", -- Line is too long.
     },
     files = {

async.lua

@@ -1,12 +1,12 @@
 --[[
 	simple kernel for async tasks running in the background
-	
+
 	can "stall" a task by yielding the string "stall"
 		this will suspend the coroutine until the rest of
 		the queue has been processed or stalled
 		and can early-out update_for_time
 
-	todo: 
+	todo:
 		multiple types of callbacks
 			finish, error, step
 		getting a reference to the task for manipulation

pretty.lua

@@ -60,7 +60,7 @@ function pretty._process(input, config, processing_state)
 
 	--pull out config
 	config = table.overlay({}, pretty.default_config, config or {})
-	
+
 	local per_line = config.per_line
 	local depth = config.depth
 	local indent = config.indent

state_machine.lua

@@ -115,7 +115,7 @@ end
 --hard-replace a state table
 --	if we're replacing the current state,
 --	exit is called on the old state and enter is called on the new state
---	mask_transitions can be used to prevent this if you need to 
+--	mask_transitions can be used to prevent this if you need to
 function state_machine:replace_state(name, state, mask_transitions)
 	local do_transitions = not mask_transitions and self:in_state(name)
 	if do_transitions then

vec2.lua

@@ -266,7 +266,7 @@ end
 
 vec2.rot180_inplace = vec2.inverse_inplace --alias
 
---get the angle of this vector relative to (1, 0) 
+--get the angle of this vector relative to (1, 0)
 function vec2:angle()
 	return math.atan2(self.y, self.x)
 end

vec3.lua

@@ -343,7 +343,7 @@ local _euler_macro = {
 }
 function vec3:rotate_euleri(angle_x_axis, angle_y_axis, angle_z_axis)
 	for i, swizzle in ipairs(_euler_macro) do
-		local angle = 
+		local angle =
 			i == 1 and angle_x_axis
 			or i == 2 and angle_y_axis
 			or i == 3 and angle_z_axis