v1.2.0

Release 1.2.0 of the QuickTick Timing functions.

Changes from v1.1.0

#6 The QuickTickTimer now allows sub-millisecond intervals as low as 0.5 ms.
#7 Implemented a new property "IsQuickTickUsed", which can be used to determine if the actual QuickTick implementation or the Fallback is used
#8 The package now also supports and is build for .NET Framework 4.8+
#9 Event handler now cleanly handles dispose

Thanks to @repdvan for an initial Pull Request and help on #6 and #8