diff --git a/dist/README.md b/dist/README.md
index 1f6547b..46f2891 100644
--- a/dist/README.md
+++ b/dist/README.md
@@ -1,5 +1,46 @@
 # Change History
 
+----
+## 0.2.1
+
+### Improvements
+
+**`pygcode-norm` script:**
+
+Added "Final Machine Actions:"
+
+    Final Machine Actions:
+      standardize what's done at the end of a gcode program.
+
+      --zero_xy, -zxy       On completion, move straight up to
+                            rapid_safety_height, then across to X0 Y0.
+      --zero_z, -zz         On completion, move down to Z0 (done after zero_xy, if
+                            set).
+      --rapid_safety_height RAPID_SAFETY_HEIGHT, -rsh RAPID_SAFETY_HEIGHT
+                            Z value to move to before traversing workpiece (if not
+                            set, max value will be attempted).
+      --spindle_off, -so    On completion, turn spindle off.
+
+
+Added ability to remove all codes & parameters that cannot be parsed.
+
+      --rm_invalid_modal, -rmim
+                            Simply remove everything that isn't understood. Use
+                            with caution.
+
+**Library Improvements**
+
+* `Machine.abs2work(<Position>)` and `Machine.work2abs(<Position>)` position
+  converters, apply machine's offset to the given position without effecting
+  machine's current position.
+* `Machine.clean_block(<Block>)` removes content from a block that's not parsable (use with caution)
+* `Machine.ignore_invalid_modal` bool class parameter, if set, will continue on merrily while ignoring
+  anything not parsable (similarly to `clean_block`)
+
+### Bugfixes
+
+
+----
 ## 0.2.0
 
 Moved to `alpha`
@@ -20,6 +61,7 @@ Improvements to read more versatile formats
 * [#5](https://github.com/fragmuffin/pygcode/issues/5) Line number in program
 
 
+----
 ## 0.1.2
 
 Changes to accommodate implementation of [grbl-stream](https://github.com/fragmuffin/grbl-stream)