Release T3

Notable Changes:

• #1 - FIX the Export as OpenOffice/LibreOffice CSV that are not escaping commas within the abstract field (i.e. Custom1)
• #6 - REFACTOR the dark theme colour of highlighted text in Entry Merge Dialogue for people with impaired colour vision.

What's Changed

• Fix for issue #1 and #6 by @LDeolindo in #11

New Contributors

• @LDeolindo made their first contribution in #11

Full Changelog: https://github.com/LDeolindo/jabref/commits/release_t3-1.0.0