Merge pull request #17 from kostajh/develop

Fix test_updating_task
Merge pull request #18 from kostajh/develop

Do not replace slashes when in experimental mode
Be more gentle with the timestamp test.
Add failing test against experimental mode.
Merge branch 'develop' of github.com:ralphbean/taskw into develop
Skip experimental tests of taskwarrior version is too low.
Check if we have a string before calling replace().