Add copyright updater scripts.

Author: pmienk

maintenance/update-copyright-generators.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+YEAR=$(date +%Y)
+
+find . -path '*/.git' -prune -type f -o -type f -name '*' | xargs sed --in-place -e "s/Copyright (c) 20\([0-9][0-9]\)-20[0-9][0-9] \$(my.name)/Copyright (c) 20\1-$YEAR \$(my.name)/g"

maintenance/update-copyright.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+YEAR=$(date +%Y)
+
+find . -path '*/.git' -prune -type f -o -type f -name '*' | xargs sed --in-place -e "s/Copyright (c) 20\([0-9][0-9]\)-20[0-9][0-9] libbitcoin/Copyright (c) 20\1-$YEAR libbitcoin/g"