Add the CHANGELOG for the new tag

CHANGELOG

@@ -1,3 +1,30 @@
+v. 3.4
+	- Observables can now update their data structures while the sim runs
+	- Add a new observable to compute the stress autocorrelation
+	- Normalise the behaviour of log-lin trajectories
+	- Improve error messages on CUDA
+	- Remove a deprecated function by reworking how textures are accessed
+	- Fix a bug whereby the kinetic energy was not correctly printed to configuration files (issue #22)
+	- Fix a bug whereby RNA simulations with CUDA11 would crash
+	- Fix a bug in the CUDA barostat that sometimes made the code crash
+	- Fix a bug whereby "use_average_seq" would be always interpreted as an int rather than a boolean value (issue #27)
+	- Fix a bug whereby the code would not compile on Apple systems (issue #30)
+	oxpy:
+		- Make it possible to access the last_conf observable from python
+		- Add a Jupyter Notebook example
+		- Make the code deallocate ConfigInfo at the end of each simulation
+		- Fix a bug whereby oxpy simulations on CUDA couldn't be run consequently
+		- Fix a bug whereby the ConfigInfo object wouldn't be accessible from Python through the analysis backend 
+	oat:
+		- Clarify python version requirements
+		- Change svd_align to not always align to (0, 0, 0)
+		- Add oxview visual bindings
+		- Update get_confs to handle times larger than the max value of int
+		- Update pca to have CLI control over how many oxView json files get printed (see issue #24)
+		- Add cli documentation to oat
+		- Fix a typo in db_to_force parser
+	- Several documentation improvements
+
 v. 3.3 [7cb66cf]
 	- Add variables to the input file
 	- Add support for mathematical expressions to the input file