Change version numbers in stylesheets, fix typo in Twenty Fourteen readme and update copyright dates for themes. Twentysixteen wasn't updated this cycle.
See #40745 for changes that helped push this along.
Fixes#40905.
Props davidakennedy, mrahmadawais, maedahbatool.
Built from https://develop.svn.wordpress.org/trunk@40883
git-svn-id: http://core.svn.wordpress.org/trunk@40733 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Bump version numbers and update readme files for themes with changes. Also updates description for Twenty Seventeen and removes version number for HTML5 shiv for easier updates in the future.
Props davidakennedy.
Fixes#38858.
Built from https://develop.svn.wordpress.org/trunk@39496
git-svn-id: http://core.svn.wordpress.org/trunk@39436 1a063a9b-81f0-0310-95a4-ce76da25c4cd