Merge pull request #75 from DirectoryTree/bug-74

Use binary content stream for attachments

Merge pull request #73 from DirectoryTree/bug-66

Properly extract attachments from nested forwarded messages

Merge pull request #72 from DirectoryTree/enhancement-71

Use ImapConnectionException as abstract base class for all ImapConnectionExceptions

Merge pull request #70 from DirectoryTree/bug-69

Convert query values to UTF-7

Merge pull request #67 from DirectoryTree/bug-50

Add `Str::toImapUtf7` method to encode UTF-8 back to UTF-7 in folder queries

Add mixin to interface

Closes #64

Merge pull request #63 from DirectoryTree/test-improvements

Testing improvements

Fix tests

Merge pull request #62 from DirectoryTree/fakes

Fakes

Merge pull request #61 from DirectoryTree/bug-60

Fix StartTLS match