#235 set version to 1.17.0 and updated release notes
Merge pull request #246 from adamralph/235

#235 set version to 1.17.0 and updated release notes
#235 changed version to 1.18.0-beta01 and cleared release notes
Merge pull request #247 from blairconrad/235-prepare-for-vnext

#235 changed version to 1.18.0-beta01 and cleared release notes