v3.1.0

New

• Selective history delete #178 by @BIBLETUM in #460
• Allow large exponent results by @bmg1919 in #507
• Automatically adjust text size by @fmmagalhaes in #479
• Add double/triple zero button by @subhajit-rajak in #485
• Automated history by @Darkempire78 in #472

Improvements

• Translations updates
• Changes by @sosauce2 in #463
• Updated theme images on main page for consistency by @An-anonymous-coder in #497
• Fix issue with negative exponents by @bmg1919 in #506
• Fix #466 by @Darkempire78 in #472
• Fix #405 - Several buttons are not labeled properly by @subhajit-rajak in #483
• Reduce minSDK to 21 (Android 5) by @sosauce2 in #463
• Several other fixes

New Contributors

• @BIBLETUM made their first contribution in #460
• @sosauce2 made their first contribution in #463
• @fmmagalhaes made their first contribution in #479
• @subhajit-rajak made their first contribution in #483
• @An-anonymous-coder made their first contribution in #497
• @bmg1919 made their first contribution in #506

Full Changelog: v3.0.1...v3.1.0