Errors in PHP 7.2

FILE: /jetpack/modules/custom-css/csstidy/class.csstidy.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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1031 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead
1070 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead
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FILE: /jetpack/modules/module-headings.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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1 | WARNING | File has mixed line endings; this may cause incorrect results
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FILE: /jetpack/modules/post-by-email.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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181 | WARNING | Method name “Jetpack_Post_By_Email::__process_ajax_proxy_request” is discouraged; PHP has reserved all method names with a double underscore prefix for future use.
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Kindly update and improve.

Humanly Yours,

Kunal Desai