Expanding textarea, emojis etc (Features request)

[sanmiguel2019]

1. Tinode's textarea should expand upwards when user is typing a message. In a case of a large message is difficult to read the written text when only 2 lines are visible,

2. There should be a possibility to deactivate sending messages with "enter". Many people don't care about it but at the same time many people hate that it's not possible to create a new paragraph with "enter".

3. Emojis/stickers. Emojis are essential to communicate emotion, something that words cannot portray. Nowadays, chatting without emojis is unthinkable.

https://github.com/mervick/emojionearea
(emojionearea expands textarea upwards or downwards)

https://github.com/pladaria/react-emojione

[or-else]

1. Sure, it would be useful. Would you like to contribute?
2. Sure. Would you like to contribute?
3. It's probably useful although heavy. The first link is for jQuery plugin, the second appears to be abandoned.

[sanmiguel2019]

3. This is for React:

https://github.com/tommoor/emojione-picker

https://github.com/ealush/emoji-picker-react

[or-else]

Would you like to send a pull request?

[or-else]

1 is added in 5ae58fb