Release v1.3.0-CI102919

• Use F# Core 6.0.6
• Speed up with ListCollector (Async sequence, List extensions, Result partition) #505 (note this does not apply to net45)
• Speed up Array extensions (apply, lift2, lift3, intercalate, intersperse, replace) #507
• Use FSharp.Core implementations for old functions that were adopted there
• Add some missing Option, Result zip functions #511
• Add explicit type parameters (plus, Seq.sum, guard, ofBytes, ofBytesWithOptions, ofBytesBE, parse, tryParse) #510
• Use InlineIfLambda attribute in CEs #508 (note this does not apply to net45)
• Some missing Option, Result zip functions #511
• Raise ArgumentNullException for Array functions #512 (note this does not apply to net45)