v3.0.1

What's Changed

• Add v3 to readme and add manual by @lisabiermann in #139
• Fix doxygen start page by @phbasler in #141
• Cleaup: Delete test.txt by @phbasler in #142
• Conan use default profile by @vollous in #140
• Conan: Different profiles for different clang versions. by @vollous in #145
• Added testing for the O(4) symmetric potentials. by @vollous in #144

Full Changelog: v3.0.0...v3.0.1