Merge branch 'github'

If a player teleports far away, their hp_bar can become deactivated and disappear. The mod installs the gauge only when a player joins, so it will be forever missing. `static_save = false` prevents the item from deactivating https://github.com/minetest/minetest/blob/master/src/serverenvironment.cpp#L2028 .
Also, it doesn't make sense to save `gauges:hp_bar` to map meta since it's not a standalone item.

CHANGELOG.md

@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+
+- [Health and breath bars now adapt to custom maximum values instead of being hardcoded to 20 and 11 respectively.](https://github.com/minetest-mods/gauges/pull/9)
+
+### Fixed
+
+- [The health bar entity is no longer lost when a player teleports.](https://github.com/minetest-mods/gauges/pull/10)
+  - A side effect is that health bar entities are no longer saved in map metadata.
+
 ## [1.0.4] - 2020-09-27
 
 ### Added

init.lua

@@ -3,6 +3,10 @@
 -- Copyright © 2014-2020 4aiman, Hugo Locurcio and contributors - MIT License
 -- See `LICENSE.md` included in the source distribution for details.
 
+local function round(v)
+	return math.floor(v + 0.5)
+end
+
 local enabled = minetest.settings:get_bool("health_bars") ~= false
 if enabled then
 	enabled = minetest.settings:get_bool("enable_damage")
@@ -36,7 +40,7 @@ local function scaleToDefault(player, field)
 	-- Scale "hp" or "breath" to supported amount
 	local current = player["get_" .. field](player)
 	local max_display = math.max(player:get_properties()[field .. "_max"], current)
-	return math.round(current / max_display * max[field])
+	return round(current / max_display * max[field])
 end
 
 minetest.register_entity("gauges:hp_bar", {
@@ -45,6 +49,7 @@ minetest.register_entity("gauges:hp_bar", {
 	textures = {"blank.png"},
 	collisionbox = {0},
 	physical = false,
+	static_save = false,
 
 	on_step = function(self)
 		local player = self.wielder