Scalafmt v1.6.0-RC2

This release fixes several issues that were reported since v1.6.0-RC1

• #1212 by @olafurpg Re-add fromHoconString overload to please neo-scalafmt
• #1211 by @olafurpg Don't crash on isWindows check, fixes #1207
• #1214 by @olafurpg Change default to trailingCommas = never
• #1215 by @olafurpg Support align.tokens={none,some,more,most}
• #1213 by @olafurpg Avoid lookup up match for non-Token.Left{Brace,Paren}
• Since this is a release candidate, the IntelliJ plugin is released in the "Nightly channel".
• NOTE sbt-scalafmt has a binary incompatibility with sbt 1 causing NoSuchMethodFoundException when formatting files with xml literals due to sbt/zinc#546 and sbt/sbt#4183

It's worth noting that the following configuration

align = more
align.openParenCallSite = true

is equivalent to

align.openParenSite = true

Instead, it is possible to set

align.tokens = more
align.openParenCallSite = true