* `--yesterday` is like `--today`, but for yesterday 😄.
* `--or` changes the behavior of filter criteria to return a union of
events matching an of the criteria than an intersection of events
matching all the criteria. Example:
ptk list --today --yesterday
Will never return results (because the criteria are mutually
exclusive).
ptk list --today --or --yesterday
Will return the marks for both today and yesterday.
Something depends on isaac 0.1.0, but that version doesn't compile on Nim 0.16
and above. Until the transitive dependancy is updated, ask for at least 0.1.2.
An incorrect time format that was used in version 0.6 and prior.
Version 0.7 between 1.0 support this format on read only and will write
out the correct format (so they can be used to convert older timelines).
