v0.7

Changes

• A new error signal, plz-error, is defined. The existing signals, plz-curl-error and plz-http-error, inherit from it, so handling plz-error catches both.

  NOTE: The existing signals, plz-curl-error and plz-http-error, are hereby deprecated, and they will be removed in v0.8. Applications should be updated while using v0.7 to only expect plz-error.

Fixes

• Significant improvement in reliability by implementing failsafes and workarounds for Emacs's process-handling code. (See #3.)
• STDERR output from curl processes is not included in response bodies (which sometimes happened, depending on Emacs's internal race conditions). (Fixes #23.)
• Use with-local-quit for synchronous requests (preventing Emacs from complaining sometimes). (Fixes #26.)
• Various fixes for :as 'buffer result type: decode body when appropriate; unset multibyte for binary; narrow to body; don't kill buffer prematurely.
• When clearing a queue, don't try to kill finished processes.

Internal

• Response processing now happens outside the process sentinel, so any errors (e.g. in user callbacks) are not signaled from inside the sentinel. (This avoids the 2-second pause Emacs imposes in such cases.)
• Tests run against a local instance of httpbin (since the httpbin.org server is often overloaded).
• No buffer-local variables are defined anymore; process properties are used instead.