Released 0.90

* Tablist package

  The files tablist.el and tablist-filter.el are no longer part of
  pdf-tools, but continue to live on in the tablist package, on which
  pdf-tools now depends on.
* Encrypted files
  When encountering an encrypted file, query for a password and
  attempt to decrypt it.
* Backward sync from isearch
  In isearch, press M-s s to visit the source of the current match.
* Disable unicode in mode-line
  New variable pdf-view-use-unicode-lighter which allows for
  disabling the use of unicode in the mode-line.

Adds translattion of highlight annotations

Enable pdf-view-mode only if needed

* lisp/pdf-tools.el (pdf-tools-install): Check if buffer is already in
  pdf-view-mode. This avoids resetting of local variables/state.

Add .clang_complete .

Fix compile errors and warnings.

* lisp/pdf-sync.el (pdf-sync-correlate-pdf): Fix wrong parentheses.
  (pdf-sync-correlate-pdf,
  pdf-sync-synctex-file-name,
  pdf-sync-synctex-file-name): Make compiler happy.