MUI

Material UI (#299)

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* ..

* ...

* material-ui boolean widget

* material-ui date widget

* realized these extra funcs are unecessary, can be handled by date-io or customProps

* fix material-ui date widget, add material-ui dateTime widget and material-ui time widget

* delete commented out code

* date/time - added useKeyboard
time - show/hide seconds according to timeFormat
boolean - use grid for 2 labels
select - use renderValue intead of empty value
multiselect - new
all - don't show placeholer in r/o mode
all - use customProps
lint fix

* number

* partial material-ui slider widget (#308)

* partial material-ui slider widget

* finish working on material-ui slider widget

* use Number() instead of parse*

* customSliderProps

* slider

* range

* fix uncontrolled

Co-authored-by: Denis Oblogin <ukrbublik@gmail.com>

* remove isSpecialRange for date/time

* confirm

* moved MuiPickersUtilsProvider

* fixed uncontrolled

* some docs

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* restore config

* added MUI packages to sandbox

* lint-fix

* enable mui in tests

* to/from labels and materialValueSources (#311)



* use inline-flex and alignment to fix the vertical alignment of to/from labels

* fix css formatting

* fix formatting

* start on materialValueSources using popover and radio btns

* nit

* lint

Co-authored-by: Denis Oblogin <ukrbublik@gmail.com>

* conjs improvemnt

* better alignment styling for mui widget sep and widget value src (#314)

* better alignment styling for mui widget sep and widget value src
* ...

Co-authored-by: Denis Oblogin <ukrbublik@gmail.com>

* `value` is default source

* ts

* readme

* .

* refactor MaterialFieldSelect with renderValue (#316)


* refactor MaterialFieldSelect with renderValue

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* init skin is antd

Co-authored-by: Megan Taylor <mtaylor@megantaylor.org>