Update changelog and bump version number to v2.0

Increase emitted Awstats version in writeFileContents

Update autoload path in awmerge.php script

Fix issue merging http error sections

Rewrite AwstatsMerger to process files and sections as needed

Rewrite AwstatsFile to process sections as needed

Bump package version to 1.4.1.

Change old-style array keywords to bracket syntax, too.

Change braces to brackets to address a PHP 7.4 deprecation warning.

Change version number to 1.4.

Read section names until the first space.

Add getSection method to AwstatsFile class.

Add composer file.

Bring readme up to date.

Add copyright header to PHP files.