Allow Changing Font Size in SourceTree Interface

As per Dmitri Zaitsev's suggestion, I'm reposting a issue that was erroneously marked as minor so as to bring it to the developer team's attention. The original issue is https://jira.atlassian.com/browse/SRCTREE-1286

The default font in the actual interface of SourceTree (not the diff view) has very small font. Despite having 20/20 vision, I find it quite difficult to work with, especially on high-res displays. I've searched through the preferences but could not find a way to increase the size of the GUI font.
Please allow changing the font-size and family to any of the system's available fonts. Thanks.