Upgrade branch 2.6.x using TemplateControl (playframework#83)

```
Updated with template-control on 2019-01-16T12:08:45.678Z
  /LICENSE:
    wrote /LICENSE
  /NOTICE:
    wrote /NOTICE
  /.mergify.yml:
    wrote /.mergify.yml

```

.mergify.yml

@@ -22,25 +22,21 @@ pull_request_rules:
         method: squash
         strict: smart
 
-  # delete any branch when already merged
-  # doesn't matter if marked with labels or not
   - name: delete branch after merge
     conditions:
       - merged
     actions:
       delete_head_branch: {}
 
-  # delete 'merge-when-green' label if present and merged
-  - name: remove label after merge
+  - name: remove merge-when-green label after merge
     conditions:
       - merged
       - label=merge-when-green
     actions:
       label:
         remove: [merge-when-green]
 
-  # delete 'template-control' label if present and merged
-  - name: remove label after merge
+  - name: remove template-control label after merge
     conditions:
       - merged
       - label=template-control
@@ -54,4 +50,4 @@ pull_request_rules:
       - title~=^(\[wip\]( |:) |\[WIP\]( |:) |wip( |:) |WIP( |:)).*
     actions:
       label:
-        add: ["block-merge"]
+        add: ["block-merge"]

LICENSE

@@ -1,7 +1,116 @@
-License
--------
-Written in 2016 by Lightbend <info@lightbend.com>
+CC0 1.0 Universal
 
-To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide. This software is distributed without any warranty.
+Statement of Purpose
 
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NOTICE

@@ -0,0 +1,8 @@
+Written by Lightbend <info@lightbend.com>
+
+To the extent possible under law, the author(s) have dedicated all copyright and
+related and neighboring rights to this software to the public domain worldwide.
+This software is distributed without any warranty.
+
+You should have received a copy of the CC0 Public Domain Dedication along with
+this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.