update release notes for 0.0.26
### Common
* Made constructing the children set of a vertex more efficient by not constantly reconstructing the set.
+* Upgrade to nd4j 1.0.0-beta4
### Java
- The shape of p expected k to be the far left dimension. It is now the far right in order to allow for broadcasting semantics.
- n and p parameter validation was semi-controllable but is now completely toggleable with `vertex.setValidationEnabled(true);`
+- Add more generic tensor slice that allows start stop and interval slicing.
+
+- Change name on DoubleTensor compare methods by removing get (e.g. `getGreaterThanMask(...))` -> `greaterThanMask(...)`)
+
+- BooleanTensor now uses boolean arrays instead of Nd4j doubles
+
+- Added custom distribution example to examples
+
+- Added to DoubleTensor operations inspired by numpy:
+ - cumSum
+ - cumProd
+ - product
+ - logAddExp
+ - logAddExp2
+ - log10
+ - log2
+ - log1p
+ - exp2
+ - expM1
+ - tanh
+ - atanh
+ - sinh
+ - asinh
+ - cosh
+ - acosh
+
+- Fixed bug in NUTS where NaN gradients do not cause a step to be divergent
+
### Python
* Faster tensor creation in Python
