Add release notes for RBTools 0.7.8.
Review Request #8588 — Created Jan. 3, 2017 and submitted
This covers the work done on the installers for Windows and macOS, as well as the Unicode fixes and improvements to rbt setup-repo. It's a smaller release, but an important one from an installer standpoint.
Built the docs and read through them.
Checked for spelling errors.
Tool: Pyflakes Ignored Files: docs/releasenotes/index.rst docs/releasenotes/0.7.8.rst Tool: PEP8 Style Checker Ignored Files: docs/releasenotes/index.rst docs/releasenotes/0.7.8.rst