Allow version 2.0 of "psr/http-message" package. (#109)

Upgrade GitHub actions checkout to v4 (#108)

Total issues resolved: **9**

- [71: Add PHP 8](#71) thanks to @odan
- [72: Remove support for PHP 7.1 and 7.2](#72) thanks to @akrabat
- [74: Update dependencies and add github workflow](#74) thanks to @l0gicgate
- [75: Update squizlabs/php_codesniffer requirement from ^3.5 to ^3.6](#75) thanks to @dependabot[bot]
- [76: Update slim/psr7 requirement from ^1.3.0 to ^1.5](#76) thanks to @dependabot[bot]
- [77: Add `templateExists` function](#77) thanks to @jakejohns
- [78: Update phpunit/phpunit requirement from ^9.5.10 to ^9.5.11](#78) thanks to @dependabot[bot]
- [79: Drop Support for PHP 7.3 & Travis CI](#79) thanks to @nbayramberdiyev
- [90: Update squizlabs/php_codesniffer requirement from ^3.6 to ^3.7](#90) thanks to @dependabot[bot]

Total issues resolved: **2**

- [71: Add PHP 8](#71) thanks to @odan
- [72: Remove support for PHP 7.1 and 7.2](#72) thanks to @akrabat

Total issues resolved: **10**

- [51: Use 4 space indent in composer.json](#51) thanks to @piotr-cz
- [52: Add fetchTemplate() method for layout-less rendering](#52) thanks to @jaywilliams
- [53: Bugfix: Infinite loop in fetch](#53) thanks to @piotr-cz
- [54: Add test for calling fetch() in a layout template](#54) thanks to @akrabat
- [55: Update dependencies](#55) thanks to @akrabat
- [56: Update for PHP 7.1+](#56) thanks to @akrabat
- [57: Add custom exceptions](#57) thanks to @akrabat
- [59: Fix docblocs and license information](#59) thanks to @l0gicgate
- [61: Update .travis.yml](#61) thanks to @sergiy-petrov
- [63: Update link to laminas-escaper](#63) thanks to @odan

Total issues resolved: **4**

- [36: Use func_get_arg(0) vs $template](#36) thanks to @pmjones
- [39: textual change in README.md](#39) thanks to @llvdl
- [44: Add layout support](#44) thanks to @tsu1980
- [45: Update .travis.yml](#45) thanks to @geggleto

Total issues resolved: **2**

- [29: Handle exceptions and throwables in
templates](#29)
- [32: Add leading slash if missing in setTemplatePath()
too](#32)

Tag version 2.1.0

Update composer.json

Merge pull request #13 from geggleto/master

File Rename