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Merge pull request barbushin#219 from cristicotet/master

barbushin#218 Fix switchMailbox

Merge pull request barbushin#210 from lincome/master

Fix mailbox switchMailbox  method

Improved errors handling for imap functions calls

closes barbushin#207

Fix fatal error of imap_mime_header_decode

closes barbushin#202

Fix internal attachment links

closes barbushin#204

Fix headers parsing encoding

ref barbushin#201

Wrap all imap methods with utf7 encoding conversion and errors handling

Update composer.json

Update README.md