• BotMan Version: 2.5.0
• PHP Version: 7.4.2
• Messaging Service(s): Telegram, Web
• Cache Driver: Redis

Description:

I noticed the typesAndWaits uses the sleep method, but this only allows you to sleep whole seconds.

Wouldn't it be better to use usleep, so we can sleep for 2.5 seconds, or 0.5 seconds?

I noticed the code moved from the BotMan class to the drivers, but the ch

Describe the bug
Cannot use 'cp' command while installing it on Windows.
It is needed to replace 'cp' with 'copy' in scripts written in package.json if an user wants to install botfront on Windows machine.

To Reproduce
Steps to reproduce the behavior:

1. Install choco
2. Install meteor
3. Install botfront using meteor npm install in Windows Powershell.

Expected behavior

• A new botkit controller for Slack
• Updated HTML within ThirdParty/index.js
• At least boiler code for test suites.

name: test
match: command
args:
  - var1

to

name: test
match: command
expose_args:
  - var1

This is consistent with expose_json_fields. So, any time we expose variable from within rules we would use the expose_ prefix.

Here are SSML helper functions that should be extended to covers all SSML features supported by Alexa and [Google Actions](https://developers.google.com/assistant/actions