add tests for dep and lock file parsers
omit content option respected
rename ReferencesMode active pattern case to InstallOption
add tests for build action
implement DetermineBuildAction - references #161
blacklisting .tt and .ttinclude files when restoring contetn dir
Merge branch 'content_none_mode' into refactor_project_file
reuse DeletPaketNodes member
FindAllProjects return ProjectFile, ProjectNode is a value of ProjectFile type
use FileItem type for Content and Compile files in ProjectFile
support for hard flag for file items, handle compile and content items in the same way
support for custom link path in a project - references #111
revert proj file debug options
Add a bit of docs for #213
Merge branch 'master' of https://github.com/fsprojects/Paket