Updated the version to PHP>=8.2.0

Reverted the code here
Small optimization
Created a special testing group
Updated the enums
Updated gitignore
Removed the C source
Fixed some failing tests.
A word
Added clarifying parenthesis
Formatting and cleanup
Added the missing base TALIB files as reference files
Split the polyfill files
Merge pull request #21 from pottertech/master
Update Core.php
Added the C reference source

Added functions from TA-lib

* accbands
* avgdev
* imi

Removed version from composer.json

Version 2.0.0

Updated version for Composer

Changed the compatibility to be public

The Trader PECL library has no way to change this setting, but it is available in the TALib library. This setting changes the way that the EMA is calculated so that it is using the standard EMA formula instead of a sliding window.

Added PHP 7.0 to the tests