Set VERSION to 1.6.0-beta1 (JuliaLang#39120)

 Set VERSION to 1.5.3 (JuliaLang#38345)

Set VERSION to 1.5.2 (JuliaLang#37718)

Set VERSION to 1.5.1 (JuliaLang#37194)

Set VERSION to 1.5.0 (JuliaLang#36876)

set VERSION to 1.5-rc2 (JuliaLang#36659)

Set VERSION to 1.5.0-rc1 (JuliaLang#36445)

Set version to 1.5.0-beta1 (JuliaLang#36044)

Set VERSION to 1.4.2 (JuliaLang#35882)

Set VERSION to 1.4.1 (JuliaLang#35467)