release_notes.md

+# Release notes #
+
+But at the very least this page aims at keeping providing information regarding the change of function or arguments name within
+the different versions of LMGC90. Thus they are not release notes 'stricto sensu' yet !
+
+* [2015->2016](#2016)
+
+## <a name=2016> version 2016 ##
+
+There are a lot of changes concerning the **pre**, thus a script is provided in *lmgc90_user/src/addons* attempting to
+update a single script or all python script in a directory tree.
+
+ If  *lmgc90_user/src/addons* is in your `$PATH` environment variable, run:
+```shell
+update_gen_2016.py gen_sample.py
+```
+To update *gen_sample.py* script. You can replace the script name by a directory to try to update all python scripts in it.
+There are cases where the script may fail, here is the list of changes so that you can correct you scripts yourself:
+
+* change of submodule of `pylmgc90` changed from`pre_lmgc`to `pre`
+* in `tact_behav` constructor: `type` is replaced by `law`
+* in `model` constructor: `type` is replaced by `physics`
+* in `material` constructor: `type` is replaced by `materialType`
+* in `avatar.addContactors` method : `type` is replaced by `shape`
+* in `avatar.rotate` method: `type` is replaced by `description`
+* in `avatar.imposeDrivenDof` method: `type` is replaced by `description`
+* in `postpro_command' constructor: `type` is replaced by `name`
+* in `buildMesh2D` function: `type_mesh` is replaced by `mesh_type`
+* in `avatar` constructor: `type` argument has been removed
+* in `node` constructor: `type` argument has been removed
+* in `element` constructor:  `type` argument is replaced by `elem_dim` and the corresponding value must be the geometrical dimension of the element