Developer credits
Git commits in Moodle 3.4.1 by Carson Tam
commit 65e260281bea3870e894352a781b45d33f5690ce Author: Carson Tam <carson.tam@ucsf.edu> Date: Tue, 28 Nov 2017 06:47:53 +0800 Tag: v3.4.1 MDL-60161 class curl in filelib: Cleaned up doc block.
commit f29bd28d6a7f875d577b0ee67e0c1b0c26e5d350 Author: Carson Tam <carson.tam@ucsf.edu> Date: Thu, 28 Sep 2017 23:46:31 +0800 Tag: v3.4.1 MDL-60161 class curl in filelib: Avoid duplicate params in http header