1.3.0

Optimize watch compilations
Add dependencies to ensure all necessary files are recompiled in a watch compilation (#1188)
Enable nested options (#1189, #1219)
Remove closures generated by F# compiler
Add DateTimeOffset
Added inf, nan operators
Fix #1218: Multiple namespaces in same file
Fix #1230: Seq.singleton returns empty after first use
Fix #1227: Names in paket.references are not case sensitive
Fix #1223: Async.StartChild
Fix #1216: Print.sprintf (note the qualified module)
Fix #1204: kprintf works indirectly
Fix #1203: choose and pick with generic options
Fix #1201: Cannot find replacement for System.Char::ToUpper
Fix #1193 and other string printing errors
Fix #1190: Trait calls don't check inherited members
Fix #1187: List.truncate returning one-too-many elements
Fix #1186: Negated negative values