Merge branch 'go1.16'

merge go1.16 changes

This includes embedded files for releases (no extra 'data' directory!)
and support for a custom language file directory, allowing one to
customize the text accross the app.

.drone.yml

@@ -9,7 +9,7 @@ steps:
       commands:
           - git fetch --tags
     - name: release
-      image: golang:latest
+      image: golang:1.16rc1-buster
       environment:
           GITHUB_TOKEN:
               from_secret: github_token
@@ -64,7 +64,7 @@ type: docker
 
 steps:
     - name: build
-      image: golang:latest
+      image: golang:1.16rc1-buster
       commands:
         - apt update -y
         - apt install build-essential python3-pip curl software-properties-common sed upx -y
@@ -130,7 +130,7 @@ type: docker
 
 steps:
     - name: build
-      image: golang:latest
+      image: golang:1.16rc1-buster
       commands:
         - apt update -y
         - apt install build-essential python3-pip curl software-properties-common sed upx -y
@@ -144,4 +144,3 @@ trigger:
     event:
         include:
             - pull_request
-