3.4.0-alpha004

Using Argu 3 alpha channel
Inaccessible caches are excluded for the duration of running a command - #1770
BUGFIX: auto-restore on fixes old targets file references - #1768
BUGFIX: Added handling for cache not being accessible - #1764
BUGFIX: Fixed out-of-date check for remote files - #1760, #1762, #1766
BUGFIX: Using network cache with invalid credentials should not fail restore - #1758
BUGFIX: Make the copy task more robust if we can't parse target framework - #1756
USABILITY: Show out-of-sync warning message if paket.lock is not matching paket.dependencies - #1750
COSMETICS: Don't trace download of remote files twice