Merge pull request microsoft#207 from Microsoft/dev regen 5.1 from M150

Merge pull request microsoft#200 from Microsoft/dev M149

Merge pull request microsoft#191 from Microsoft/dev M149 Update

Merge pull request microsoft#182 from Microsoft/users/tedchamb/dev5 fix path casing for NuGet client

Merge pull request microsoft#183 from Microsoft/dev 5.0.0b2 fix directory and filename casing in NuGet client.

Merge pull request microsoft#179 from Microsoft/dev 5.0 APIs plus refactor

Merge pull request microsoft#169 from Microsoft/dev 0.1.25 - Fix for enum references within collections causing deserialization issues

Merge pull request microsoft#164 from Microsoft/dev 0.1.24 - Fix support for client uploads

Merge pull request microsoft#161 from Microsoft/dev fix download operations / set creds on config (to support msrest 0.6.3)

Merge pull request microsoft#156 from Microsoft/users/tedchamb/dev Fix deserialization issue with missing DayOfWeek.