Create the release 1.0.0

[j-rivero]

I believe that after the merge of pull request #62 we are ready to tag and release the version 1.0.0.
If there is anything missing, please let me know.

//cc @scpeters

[scpeters]

There are some outstanding pull requests, but they are proposing new features, which we still need to figure out how to handle. I think we can go with 1.0

[j-rivero]

Agree. I don't have perms to create the release, could you please generate it?

[scpeters]

draft:

• https://github.com/ros/urdfdom/releases/tag/untagged-1789fe5a1ae3ecd8f919

[scpeters]

I also created a 0.4 branch which is two pull requests ahead of 0.4.2

• Fix library directory in pkg-config file #88
• Use gtest instead of boost unit_test_framework #89

[scpeters]

https://github.com/ros/urdfdom/releases/tag/untagged-1789fe5a1ae3ecd8f919

[j-rivero]

https://github.com/ros/urdfdom/releases/tag/untagged-1789fe5a1ae3ecd8f919

Probably reserve for repo admins only, 404 for me.

[scpeters]

https://github.com/ros/urdfdom/releases/tag/1.0.0