v0.26 increased logging, small fixes

What's Changed

• make project nullable on datasource #1210
• add params to workbook publish method #1087
• add certification to publishing a datasource #1058
• add contentURL as a filter #456
• adding sample file for favorites, issue #737 by @narcolino-tableau in #1085
• logging updates, long running uploads now show incremental progress logs by @jacalata in #1222