add options to set version on files

[chriselion]

Adds a --new-version option to the version validation script. This makes it a little less tedious to do a new release.

(venv) ~/code/ml-agents (develop-update-versions) $ python utils/validate_versions.py --new-version=0.42.0
Updating to verison 0.42.0
Setting ml-agents/mlagents/trainers/__init__.py to version 0.42.0
Setting ml-agents-envs/mlagents/envs/__init__.py to version 0.42.0
Setting gym-unity/gym_unity/__init__.py to version 0.42.0
(venv) ~/code/ml-agents (develop-update-versions) $ git diff

diff --git a/gym-unity/gym_unity/__init__.py b/gym-unity/gym_unity/__init__.py
index ae6db5f1..92717f71 100644
--- a/gym-unity/gym_unity/__init__.py
+++ b/gym-unity/gym_unity/__init__.py
@@ -1 +1 @@
-__version__ = "0.11.0"
+__version__ = "0.42.0"
diff --git a/ml-agents-envs/mlagents/envs/__init__.py b/ml-agents-envs/mlagents/envs/__init__.py
index ae6db5f1..92717f71 100644
--- a/ml-agents-envs/mlagents/envs/__init__.py
+++ b/ml-agents-envs/mlagents/envs/__init__.py
@@ -1 +1 @@
-__version__ = "0.11.0"
+__version__ = "0.42.0"
diff --git a/ml-agents/mlagents/trainers/__init__.py b/ml-agents/mlagents/trainers/__init__.py
index ae6db5f1..92717f71 100644
--- a/ml-agents/mlagents/trainers/__init__.py
+++ b/ml-agents/mlagents/trainers/__init__.py
@@ -1 +1 @@
-__version__ = "0.11.0"
+__version__ = "0.42.0"

[ervteng]

👍