BUGFIX: Remove possibly nonexistent extension safely - #2901
BUGFIX: Transitive dependencies should be kept as stable as possible in paket install - #2927
PERFORMANCE: Boost conflicts and skip the "loop of doom" - #2928
PERFORMANCE: Preferred versions do not need to query the NuGet server - #2927
BOOTSTRAPPER: work around fileversion issues
BOOTSTRAPPER: Don't lock files in the bootstrapper when we are only reading - #2936
Resolution by file order in paket.dependencies instead of alphabetical order (as new tie breaker) - #2898