CHANGES.md in trailblazer-activity-0.9.0 vs CHANGES.md in trailblazer-activity-0.9.1

@@ -1,4 +1,8 @@
+# 0.9.1
+
+Use `context-0.9.1`.
+
 # 0.9.0
 
 * Change API of `Input`/`Output` filters. Instead of calling them with `original_ctx, circuit_options` they're now called with the complete (original!) circuit interface. This simplifies calling and provides all circuit arguments to the filter which can then filter-out what is not needed.
     * `:input` is now called with `((original_ctx, flow_options), circuit_options)`
     * `:output` is now called with `(new_ctx, (original_ctx, flow_options), circuit_options)`