Revert "Updated .gitignore"

This reverts commit c018fc23df0437dec70e7182d95471f40984a34c.
Revert "Deleted autogenerated and unnecessary files."

This reverts commit 5028f3a85535978e535e89e15de14bc55ca5d172.
Revert "Merge branch '0.6.x'"

This reverts commit 26afa5afe25351a2e762477ab1a3bed309c5e07a, reversing
changes made to e26c368fd0c242ade1a17153c4a67526c72f440a.