diff --git a/LICENSE.md b/LICENSE.md
index 61e68fa..0927556 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,22 +1,157 @@
+### GNU LESSER GENERAL PUBLIC LICENSE
-# The MIT License (MIT)
+Version 3, 29 June 2007
-Copyright © 2019 by luk3yx.
+Copyright (C) 2007 Free Software Foundation, Inc.
+
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+This version of the GNU Lesser General Public License incorporates the
+terms and conditions of version 3 of the GNU General Public License,
+supplemented by the additional permissions listed below.
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+#### 0. Additional Definitions.
+
+As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the
+GNU General Public License.
+
+"The Library" refers to a covered work governed by this License, other
+than an Application or a Combined Work as defined below.
+
+An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+A "Combined Work" is a work produced by combining or linking an
+Application with the Library. The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+#### 1. Exception to Section 3 of the GNU GPL.
+
+You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+#### 2. Conveying Modified Versions.
+
+If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+- a) under this License, provided that you make a good faith effort
+ to ensure that, in the event an Application does not supply the
+ function or data, the facility still operates, and performs
+ whatever part of its purpose remains meaningful, or
+- b) under the GNU GPL, with none of the additional permissions of
+ this License applicable to that copy.
+
+#### 3. Object Code Incorporating Material from Library Header Files.
+
+The object code form of an Application may incorporate material from a
+header file that is part of the Library. You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+- a) Give prominent notice with each copy of the object code that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
+- b) Accompany the object code with a copy of the GNU GPL and this
+ license document.
+
+#### 4. Combined Works.
+
+You may convey a Combined Work under terms of your choice that, taken
+together, effectively do not restrict modification of the portions of
+the Library contained in the Combined Work and reverse engineering for
+debugging such modifications, if you also do each of the following:
+
+- a) Give prominent notice with each copy of the Combined Work that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
+- b) Accompany the Combined Work with a copy of the GNU GPL and this
+ license document.
+- c) For a Combined Work that displays copyright notices during
+ execution, include the copyright notice for the Library among
+ these notices, as well as a reference directing the user to the
+ copies of the GNU GPL and this license document.
+- d) Do one of the following:
+ - 0) Convey the Minimal Corresponding Source under the terms of
+ this License, and the Corresponding Application Code in a form
+ suitable for, and under terms that permit, the user to
+ recombine or relink the Application with a modified version of
+ the Linked Version to produce a modified Combined Work, in the
+ manner specified by section 6 of the GNU GPL for conveying
+ Corresponding Source.
+ - 1) Use a suitable shared library mechanism for linking with
+ the Library. A suitable mechanism is one that (a) uses at run
+ time a copy of the Library already present on the user's
+ computer system, and (b) will operate properly with a modified
+ version of the Library that is interface-compatible with the
+ Linked Version.
+- e) Provide Installation Information, but only if you would
+ otherwise be required to provide such information under section 6
+ of the GNU GPL, and only to the extent that such information is
+ necessary to install and execute a modified version of the
+ Combined Work produced by recombining or relinking the Application
+ with a modified version of the Linked Version. (If you use option
+ 4d0, the Installation Information must accompany the Minimal
+ Corresponding Source and Corresponding Application Code. If you
+ use option 4d1, you must provide the Installation Information in
+ the manner specified by section 6 of the GNU GPL for conveying
+ Corresponding Source.)
+
+#### 5. Combined Libraries.
+
+You may place library facilities that are a work based on the Library
+side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+- a) Accompany the combined library with a copy of the same work
+ based on the Library, uncombined with any other library
+ facilities, conveyed under the terms of this License.
+- b) Give prominent notice with the combined library that part of it
+ is a work based on the Library, and explaining where to find the
+ accompanying uncombined form of the same work.
+
+#### 6. Revised Versions of the GNU Lesser General Public License.
+
+The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+as you received it specifies that a certain numbered version of the
+GNU Lesser General Public License "or any later version" applies to
+it, you have the option of following the terms and conditions either
+of that published version or of any later version published by the
+Free Software Foundation. If the Library as you received it does not
+specify a version number of the GNU Lesser General Public License, you
+may choose any version of the GNU Lesser General Public License ever
+published by the Free Software Foundation.
+
+If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/csm/init.lua b/csm/init.lua
index 0d119c8..79ecf06 100644
--- a/csm/init.lua
+++ b/csm/init.lua
@@ -3,6 +3,19 @@
--
-- Copyright © 2019-2020 by luk3yx
--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Lesser General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Lesser General Public License for more details.
+
+-- You should have received a copy of the GNU Lesser General Public License
+-- along with this program. If not, see .
+--
-- Spectre mitigations make measuring performance harder
local ENABLE_SPECTRE_MITIGATIONS = true
diff --git a/csm_strict/init.lua b/csm_strict/init.lua
index 79cea39..5c5886c 100644
--- a/csm_strict/init.lua
+++ b/csm_strict/init.lua
@@ -3,6 +3,19 @@
--
-- Copyright © 2019-2020 by luk3yx
--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Lesser General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Lesser General Public License for more details.
+
+-- You should have received a copy of the GNU Lesser General Public License
+-- along with this program. If not, see .
+--
-- Spectre mitigations make measuring performance harder
local ENABLE_SPECTRE_MITIGATIONS = true
diff --git a/example_sscsm.lua b/example_sscsm.lua
index 3e59740..fa3378b 100644
--- a/example_sscsm.lua
+++ b/example_sscsm.lua
@@ -2,8 +2,21 @@
-- SSCSM: Server-Sent Client-Side Mods proof-of-concept
-- Testing code
--
--- Copyright © 2019 by luk3yx
--- License: https://luk3yx.mit-license.org/@2019
+-- Copyright © 2019-2020 by luk3yx
+-- License: https://git.minetest.land/luk3yx/sscsm/src/branch/master/LICENSE.md
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Lesser General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Lesser General Public License for more details.
+
+-- You should have received a copy of the GNU Lesser General Public License
+-- along with this program. If not, see .
--
--[==[
diff --git a/init.lua b/init.lua
index 7798aab..8b7bbd0 100644
--- a/init.lua
+++ b/init.lua
@@ -1,7 +1,20 @@
--
-- SSCSM: Server-Sent Client-Side Mods proof-of-concept
--
--- Copyright © 2019 by luk3yx
+-- Copyright © 2019-2020 by luk3yx
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Lesser General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Lesser General Public License for more details.
+
+-- You should have received a copy of the GNU Lesser General Public License
+-- along with this program. If not, see .
--
local modname = minetest.get_current_modname()
diff --git a/minify.lua b/minify.lua
index 19be02d..b771f96 100644
--- a/minify.lua
+++ b/minify.lua
@@ -1,7 +1,20 @@
--
-- A primitive code minifier
--
--- Copyright © 2019 by luk3yx
+-- Copyright © 2019-2020 by luk3yx
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Lesser General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Lesser General Public License for more details.
+
+-- You should have received a copy of the GNU Lesser General Public License
+-- along with this program. If not, see .
--
-- Find multiple patterns
diff --git a/sscsm_init.lua b/sscsm_init.lua
index d787c50..c8c50ae 100644
--- a/sscsm_init.lua
+++ b/sscsm_init.lua
@@ -2,8 +2,21 @@
-- SSCSM: Server-Sent Client-Side Mods proof-of-concept
-- Initial code sent to the client
--
--- Copyright © 2019 by luk3yx
--- License: https://luk3yx.mit-license.org/@2019
+-- Copyright © 2019-2020 by luk3yx
+-- License: https://git.minetest.land/luk3yx/sscsm/src/branch/master/LICENSE.md
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Lesser General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Lesser General Public License for more details.
+
+-- You should have received a copy of the GNU Lesser General Public License
+-- along with this program. If not, see .
--
-- Make sure both table.unpack and unpack exist.