Label resulting org events

An option is added to add a command line label into ical2org contents drawer. These labels can identify different automatic scheduled conversions, etc.

Fix dates

Dates were missing the day of the week. It is now present. Old dates worked, but some of the org-mode date editing functions behave improperly when the day of the week is missing.

Add documentation for view

A documentation update to show how to extract an email ics attachment into a buffer for editing or viewing.

Restore -count

Corrected a typo that broke the -count flag.

Fix multi-threaded multiple sources

Mutex and channel structure revised to avoid race issues.

Previous versions worked always for the first input source, but some other inputs could be skipped.
Must be paired with ics version v1.1.1

Convert after a date or duration

Add an option to specify a date or duration after which events should be converted.
Fix typos in documentation

Add count of events generated, update documentation, add mu4e example

0.98

Add count of events to stdout, fix documentation, mu4e example

Add ability to process input from stdin

When the input filename given is "-", stdin will be processed as input. This enables use in pipelines, etc.

Improve duplicates logic

The duplicates checking will check for duplicates within the input, not just duplicates with a file that existed before this execution.

Initial function release

This release has all the initial functions implemented. It is ready for testing in all areas.

See README for details of functions available.