Relevanssi Premium not PHP7 Compatible

FILE: /wp-content/plugins/relevanssi-premium/lib/cache.php
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FOUND 5 ERRORS AFFECTING 5 LINES
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12 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
23 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
24 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
49 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
50 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
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FILE: /wp-content/plugins/relevanssi-premium/lib/indexing.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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10 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.