Pass PyCodeErrors through to the user without re-wrapping
Bump cassandra version
Add test for checking start/end time inclusivity in delete and update documentation

Test Plan: -

Reviewers: marcua

Reviewed By: marcua

Differential Revision: https://phabricator.locu.com/D7808
Fix scheduler imports
Update Kronos README with info on kronosd
Fix symlink
Quick wording change
Fix bug in DatePart
Update readme with getting started links
Reword getting started
s
Merge pull request #133 from Locu/fix-datepart

Fix bug in DatePart
Add correct url for settings file
Correct link
Correct link
Merge pull request #136 from Locu/kronos-readme-fix

Kronos readme fix
Fix bug in determining Jia compute timeframe bounds
Merge pull request #141 from Locu/fix-timeframe-bounds

Fix bug in determining Jia compute timeframe bounds
Merge pull request #134 from Locu/readme-update

Update readme with getting started links
Fix egg-cache issue