v0.7.4

• New widget treeInput() based on treejs library.
• Updated virtual-select-plugin to 1.0.33.
• updateVirtualSelect() has a new argument disabledChoices to disable some choices from the menu.
• It's now possible to use variable with space in their name in selectizeGroup module, thanks to @evgeniyftw.

Bug fixes

• switchInput() produced an error when using bslib::bs_theme(version = "3") #528
• Fixed a bug in pickerGroup module when using aggregate #491.
• Fixed highlightedDates no longer works for airDatePicker() #532.