Update changelog

changelog

@@ -1,5 +1,31 @@
 ### 0.7.*
 
+- Improved clock timing. If the user is not using a `var` for the tempo, it will be far more accurate and synchronising with other FoxDot instances will be less likely to drift out of time. Also added the function to sync with instances of [EspGrid](https://github.com/d0kt0r0/EspGrid) by simply using `Clock.sync_to_espgrid()` (experimental).
+- Added `Go()` function to run FoxDot code from within normal Python programs.
+- Added `inf` variable, which can be used as a duration in any `var` object to continually use a value once it has been reached e.g. `var([0,1],[4,inf])`. This can be combined usefully with a special `var` object called `now` which starts the timing cycle for a `var` at the current time in the clock:
+
+```python
+d1 >> play("x-o-", amp=linvar([0,1],[8,inf], start=now))
+```
+
+- (Experimental) Added `Cycle` pattern type, which can be used in conjunction with `every` to more effectively iterate over different values used for different calls to the same method. For example, you spread `stutter` over 3 beats in one call, then 2 beats in the other, you would have to use a `var` like so:
+
+```python
+d1 >> play("x-o-").every(4, "stutter", dur=var([3,2],4))
+```
+
+This became problematic when introducting `sometimes` as you would not know the frequency of the call in advance. Now you can just use `Cycle` which will be converted to a `var` with appropriate timing values when used with `every`. Any other use of `Cycle` will be treated as a regular `Pattern` object. Example of how to use `Cycle`:
+
+```python
+d1 >> play("x-o-").sometimes("stutter", dur=Cycle([2,3]))
+```
+
+- Fix `Pattern.offlayer` which is similar to `offadd` but requires a second argument specifying a method apply to the second layer as a string *then* the duration to delay the layer before specifying the arguments and keyword arguments to be supplied to the given methods. E.g.
+
+```python
+# Layer with the pattern trimmed to length 3 with a delay of 0.75 beats
+P[0, 1, 2, 3].offlayer("trim", 0.75, 3)
+```
 - Include `.version` file in `setup.py` and add extension packages `VRender` and `SonicPi`.
 - Update `Sonic-Pi` extension to work with Python 2.
 - Change `Clock` time measure data type to `float` instead of `Fraction` to improve efficiency but sacrificing accuracy.