Describe how to turn archives into standard mailboxes

Readme: Clarify that selecting all is required in cookie window. Fixes #106

Improve coloured log error messages

Abort calendar archiving on failure. Fixes #67

Append to logfile instead of overwriting

Catch cases where 'postDate' isn't present in a returned message json

Partially merge branch 'ArchiveTeam:test' EXCLUDES ArchiveTeam-specific changes.

Merge pull request #29 from IgnoredAmbience/at-test-merge

Fix failing test case after 403a58e committed

Merge branch IgnoredAmbience:master into ArchiveTeam:test

Merge pull request #28 from lennier1/master

fix a few issues: 1. if a file downloaded from the files api is ~64 bytes, it is likely a bogus file, and treat it as an error and retry (if it legitimately was ~64 bytes, it will get the file anyway after downloading it 'Retries' times); 2. if a database or poll fails to download, the script should retry and gracefully fail

Retry 64 byte files (from Lord_Nigh)

Merge pull request #4 from ArchiveTeam/test

Revert "Properly encode logging messages"