v2.1.1

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Although marked as a feature tag, this version finally completes the human-friendly time formatter.
It uses an interval formatter inspired by Drupal implementation, but made much simpler.

There are no API changes, but the human formatter is finally working.

v2.1.0

This is a minor release, with the main change being the use of phpunit 8.0
 * Upgraded to PHPUnit 8.0
 * Fixed tests that used assertInternalType to use the appropriate replacements.
 * Allows composer installation on PHP ^8.0 versions
 * Adds an explicit Travis CI build for PHP 7.4, now that PHP 8.x is PHP nightly
 * Mark PHP 7.4 and nightly builds as allowed_failures.

v2.0.3

This is a minor release with no changes to functionality or APIs.

 * Allows composer installation on PHP ^8.0 versions
 * Adds an explicit Travis CI build for PHP 7.4, now that PHP 8.x is PHP nightly
 * Mark PHP 7.4 and nightly builds as allowed_failures.

v1.1.7

This is a minor release with no changes to functionality or APIs.

 * Allows composer installation on PHP ^8.0 versions
 * Adds an explicit Travis CI build for PHP 7.4, now that PHP 8.x is PHP nightly
 * Mark PHP 7.4 and nightly builds as allowed_failures.

v2.0.2

* Enable explicit PHP 7.3 builds in Travis CI.

Drop PHP 7.1

Require PHP ^7.2 and PHPUnit ^7.4

Fix parameter type docblock in Timer::formatTime

Syntax highlighting in README.md

Code style fixes