Bump interface version to 50100

diff --git a/Command.toc b/Command.toc
index 11493d4..3b064b1 100644
--- a/Command.toc
+++ b/Command.toc
@@ -1,4 +1,4 @@
-## Interface: 50001
+## Interface: 50100
 ## Version: @project-version@
 ## Title: Command
 ## Notes: Provides various !<command> style commands that can be sent in most chat channels.