trafilatura-1.6.4

Maintenance:

• MacOS: fix setup, update htmldate and add tests (#460)
• drop invalid XML element attributes with @vbarbaresi in #462
• remove cyclic imports (#458)

Navigation:

• introduce MAX_REDIRECTS config setting and fix urllib3 redirect handling by @vbarbaresi in #461
• improve feed detection (#457)

Documentation:

• enhancements to documentation and testing with @Maddesea in #456