3.19.3

2020-04-13 3.19.3:

Bug fixes:

• load log prior to calling warn method (#3925)
• test suite fixes and prefix replacement fixes (#3932)

Other:

• Enable ppc64 support (#3921)

Docs:

• Update cli help information for conda index (#3931)

Contributors:

• @beenje
• @jjhelmus
• @mingwandroid