vuetify 2.4.0-beta.0 on Node.js NPM

Potential breaking changes for evaluation:

Reset/clear on inputs should now change the value to null instead of undefined for better JSON compatibility. Make sure this always happens and we haven't left any undefined in. This change may break implementations needing to differ between empty and cleared, let us know on discord if that's the case.
If both label and placeholder are set, placeholder will now only be shown on focus instead of pushing the label up
Snackbar timeout resets on mouseover

Inputs: reset value to null instead of undefined (#12373) (8e5554d), closes #7429
VChip: add close button aria-label (#12384) (9cd505d)

Locale: add Azerbaijani locale (#12084) (a2267b2)
Locale: add Central Kurdish locale (#12100) (e121bc2)
Typography: add text-pre helper class (7a03376)
Typography: add text-pre-wrap utility class (#11772) (bf78f62), closes #11761
Typography: improve <code> styles (7877bef)
VAppBar: don't truncate title with shrink-on-scroll (#12516) (8c5ee02), closes #12514
VCalendar: add support for object categories (#12518) (806864c)
VColorPicker: add hideSliders prop (#12618) (e35d79b), closes #11138
VDataTable: add cellClass property to headers (#11775) (8d06d45)
VDataTable: index prop in item* slots (#12605) (9daeb16), closes #10646
VDataTable: isMobile prop in scoped slots (#12604) (e1720a8), closes #11330
VDatePicker: show-adjacent-months prop (#12603) (8f1cf64), closes #12237
VIcon: specify a global default icon component (#12244) (41fd082), closes #7821
VMenu: add jump to first/last item keyboard navigation (#12348) (181d337)
VSnackbar: keep snackbar open while mouseover (#12599) (8808d98), closes #12494
VTextField: only show placeholder on focus if label is set (#12635) (ff500ba), closes #12499
VWindow,VCarousel: prev and next slots (#12602) (a0140b0), closes #3235

vuetify 2.4.0-beta.0 v2.4.0-beta.0 on Node.js NPM