I hate to say this... but google it, there are many options for launchers that you can select the minecraft version that you want to use.
I use linux and I remember, but can't quite remember the name of a launcher that I used that allowed me to downgrade to any mc version, and it was not hard to find at all, I will see what I can come up with.
Again MultiMC may work, but that was not what I was thinking of. This is really irritating me as I used to have a launcher that did exactly what they want, but I have not used it in over a year, so I cannot remember the name of it. In the mean time, these are all good suggestions, I would recommend trying them out.
http://www.minecraftmine.org/category/minecraft-updates/ This is where I used to get my jars before I started using DownCraft, but I couldn't think of the name when I posted.