Version 2.8

TAU-1849 add pi ws del --id option
TAU-1850 pi ws del handles unmanaged files
TAU-1874 Add Creation time and ws id for pi ws ls
TAU-1875 Pi attribute should give static version of IP when add/del an attribute
TAU-1847 pi ws st performance optimization for IP@HEAD
TAU-1846 pi update performance optimization for IP@HEAD
TAU-1843 Adding an IP to a non-existent library gives a stacktrace
TAU-1856 Stacktrace for library add --template with no HOOKS section
TAU-1858 Pi up should warn when creating a conflict