Release version 1.5.10

This release upgrades dependency batik-css from 1.12 to 1.13 to address CVE-2019-17566 in batik-css.

And also includes adoption of an old pull request:
#18 (Fix the paragraph and name attribute regular expressions in antisamy.xml)

Release version 1.5.9

Minor fix to address issue #39. Upgrade all dependencies to lates available versions.

Release version 1.5.8

Merge pull request #35 from nahsra/1.5.8

1.5.8 release merge