v0.4.0 ical support

• ical support
• record last event description edit by user
• updated sqlite3 and webpack dependencies

Event editing

Update to allow external event-description editing. If you upgrade, the participants table must be updated to include an editor column

alter table participants add column editor int default 0;
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A non-zero value indicates the ability to edit events at the corresponding venue, or all venues if a negative value is present.

Add rideshare feature.

Incorporate rideshare feature request #2 .

Initial working version

v0.1.0

updating sqlite deps