Update README.md and version number

README.md

@@ -8,9 +8,9 @@ A library for mods which need connecting tubes / pipes / cables or similar.
 This mod is not useful for its own. It does not even have any nodes.
 It only comes with a few test nodes to play around with the tubing algorithm.
 
-Browse on: ![GitHub](https://github.com/joe7575/tubelib2)
+Browse on: [GitHub](https://github.com/joe7575/tubelib2)
 
-Download: ![GitHub](https://github.com/joe7575/tubelib2/archive/master.zip)
+Download: [GitHub](https://github.com/joe7575/tubelib2/archive/master.zip)
 
 
 ## Description
@@ -54,13 +54,19 @@ default
 optional: intllib
 
 
-# License
-Copyright (C) 2017-2020 Joachim Stolberg  
+## License
+Copyright (C) 2017-2021 Joachim Stolberg
 Code: Licensed under the GNU LGPL version 2.1 or later.
       See LICENSE.txt and http://www.gnu.org/licenses/lgpl-2.1.txt  
 Textures: CC0
 
 
+## Credits
+
+### Contributors
+- oversword (PR #5, PR #7, PR #8)
+
+
 ## History
 - 2018-10-20  v0.1  * Tested against hyperloop elevator.
 - 2018-10-27  v0.2  * Tested against and enhanced for the hyperloop mod.
@@ -81,5 +87,6 @@ Textures: CC0
 - 2020-01-03  v1.7  * max_tube_length bugfix
 - 2020-02-02  v1.8  * 'special nodes' as alternative to 'secondary nodes' introduced
 - 2020-05-31  v1.9  * Generator function 'get_tube_line' added, storage improvements
+- 2021-01-23  v2.0  * Add functions for easy & fast 'valid side' checking (PR #8)
 
 

internal2.lua

@@ -3,7 +3,7 @@
 	Tube Library 2
 	==============
 
-	Copyright (C) 2018-2020 Joachim Stolberg
+	Copyright (C) 2018-2021 Joachim Stolberg
 
 	LGPLv2.1+
 	See LICENSE.txt for more information

tube_api.lua

@@ -3,7 +3,7 @@
 	Tube Library 2
 	==============
 
-	Copyright (C) 2017-2020 Joachim Stolberg
+	Copyright (C) 2017-2021 Joachim Stolberg
 
 	LGPLv2.1+
 	See LICENSE.txt for more information
@@ -13,7 +13,7 @@
 ]]--
 
 -- Version for compatibility checks, see readme.md/history
-tubelib2.version = 1.9
+tubelib2.version = 2.0
 
 -- for lazy programmers
 local S = function(pos) if pos then return minetest.pos_to_string(pos) end end