Version 3.0.0

Please see #1301 for a list of known breaking changes.

• .NET Core 3.0 support #1323
• MahApps 2.0.0 support #1483 MUST USE PREVIEW MaterialDesignThemes.MahApps NUGET PACKAGE
• DialogHost background, Badge corner radius, switch toggle button background are now configurable. #1364 #1304 #1408
• New filled and outline DatePicker styles #1501
• Today icon on date picker now properly shows as an outline. #1446
• Projects can opt-into referencing Roboto font as a file resource rather than an embedded resource. #746
• Pack Icon Updates
  • BabyBuggy => BabyCarriage
  • BabyBuggyOff => BabyCarriageOff
  • Payment => CreditCard
  • CurrencyChf => removed
  • Franc => removed
  • FileXml => removed
  • FormatListTriangle => removed
  • GoogleAllo => removed
  • Test => Account
  • DieD10 => DiceD10
  • DieD20 => DiceD20
  • DieD4 => DiceD4
  • DieD6 => DiceD6
  • DieD8 => DiceD8
  • MagnifyOutline => Search
• Full list of changes here

A special thank you to:
@jespersh for all of the work adding in .NET Core 3.0 support.
@Mrxx99 for the many PRs, issues comments, and backlog grooming.

A big thank you to everyone who contributed (either logging issues or submitting PRs):
@AdarshRise
@adrianhara
@ahmedflix25
@ahmediddma
@AmRo045
@Anopob
@Awsmolak
@bender2k14
@beppemarazzi
@boskokg
@danaki
@dhilmathy
@gentarok
@HuggerCoursera
@ins0mniaque
@jespersh
@Jesus805
@jizc
@JonathanSchafer
@JovanovicMarija
@laxmy
@lloydkuijs
@mgnslndh
@MichelMichels
@mr-at0s
@Mrxx99
@No1e
@pavka1799
@raimand13
@RaoHammas
@rgomez90
@rimariot
@sandrohanea
@SirUppyPancakes
@SKProCH
@spiegelp
@thedude61636
@tomasfil
@topcatarg
@VarunSaiTeja
@WillEllis
@wwarby
@yexcoffier