Added view state saving to remaining tasks.
Added view state saving to completed tasks.
Added view state saving to statistics.
Added creation form input saving.
Merge pull request #21 from JGefroh/feat/preserve-view-settings

FEATURE: User's options like sort order and minutes showing are saved across views.
incremented version number to v0.6.0.
Merge branch 'release/v0.6.0'