Add aerc -v to print the installed version

Update tcell

Added config file to Make clean

Config file will be incorrect if make is run with different values for
PREFIX otherwise.

Update dependencies

This should get rid of this error message:

    tls: either ServerName or InsecureSkipVerify must be specified in the tls.Config

Clarify socksify dependency

Update README.md with better dependency list

add missing column in table

Update aerc-tutorial(7) to reflect changes to reply bindings

As of commit 11a569f6, the functions of rr/Rr and rq/Rq are switched,
but this wasn't reflected in the manpage until now.

Fix Makefile for non-GNU find

derp

Fix #116

Add delete to the default binds.conf

hldiff.py: don't highlight -/+ in filenames

Add Tabs history

Fixes #77: When closing a tab, bring you back to the one you last had focused

Wait for listing to complete before sending Done

Don't send Done until finished fetching messages

Remove worker callbacks when Done is received

Add date to message viewer

widget: Add ProvidesMessage interface

Consists of 3 functions
* Store: Access to MessageStore type
* SelectedAccount: Access to Account widget that the target widget
belongs to
* SelectedMessage: Current message (selected in msglist or the one we
are viewing)

Signed-off-by: Kevin Kuehler <keur@ocf.berkeley.edu>

Update tcell fork

Only add message to store if store exists

Prevents the program from panicing when changing folders too quickly.
onMessage can race store creation for an AccountView.

Signed-off-by: Kevin Kuehler <keur@ocf.berkeley.edu>