Only wrap attachment filenames in double quotes not other params
specs: update address field initialization tests to pass in headers correctly
Clarify parser behavior for funky angle bracket addresses
Mail::Field: lookup class for fieldname instead of iterating over each hash entry
Mail::Field#split: move splitting regexp to Mail::Patterns
Mail::Field use a lookup table for field ordering and memoize field order
Mail::Utilities#match_to_s use casecmp instead of creating downcased strings
Refactored SSL context code in Mail::SMTP; allow :ca_path or :ca_file to be passed in as settings.
Remove references to Treetop parse tree in specs
Extract comments from an address when it is part of a group
Update CHANGELOG for #471, #475, #489, #495
Merge pull request #399 from ndbroadbent/configure_ca_path_or_file

Allow :ca_path or :ca_file to be passed in as settings, for SSL context
Update CHANGELOG for #399. Refactor to prefer a single expression over early-return.
Merge pull request #484 from bpot/dont_expose_parse_tree

Don't expose the treetop parse tree for envelope.
Merge pull request #487 from bpot/comments_in_group

Extract comments from an address when it is part of a group
Update CHANGELOG for #484, #487
Merge pull request #482 from bpot/spec_cleanup

Spec Cleanup: use correct syntax for address fields
Merge pull request #485 from bpot/clarify_parser_behavior_for_funky_address

Clarify parser behavior for funky angle bracket addresses
Update CHANGELOG for #482, #485
Merge pull request #488 from bpot/field_cleanup_and_performance

Field cleanup and performance improvements