Upgraded RavenDB.Client library to 6.0.104

[ebrob]

• Updated RavenDB.Client package to 6.0.14
• Made a few code updates because of constructor changes
• Updated various test packages
• Updated project version
• Confirmed that unit tests pass

[ebrob]

Very strange - there are still a few lines that GitHub shows changed, but I didn't touch at all.

[ryanheath]

Thanks!