Release notes and upgrade instructions

• Salt 0.13.0 Release Notes
• Salt 0.12.0 Release Notes
• Salt 0.11.0 Release Notes
• Salt 0.10.5 Release Notes
• Salt 0.10.4 Release Notes
• Salt 0.10.3 Release Notes
• Salt 0.10.2 Release Notes
• Salt 0.10.0 Release Notes
• Salt 0.9.9 Release Notes
• Salt 0.9.8 Release Notes
• Salt 0.9.7 Release Notes
• Salt 0.9.6 Release Notes
• Salt 0.9.5 Release Notes
• Salt 0.9.4 Release Notes
• Salt 0.9.3 Release Notes
• Salt 0.9.2 Release Notes
• Salt 0.9.0 Release Notes
• Salt 0.8.9 Release Notes
• Salt 0.8.8 release notes
• Salt 0.8.7 release notes
• Salt 0.8.0 release notes
• Salt 0.7.0 release notes
• Salt 0.6.0 release notes