Add info build target in docs/Makefile
Fix doc configuration for Info manual
Merge pull request #1 from JonWaltman/fix-texinfo-config

Fix doc configuration for Info manual
Fix the initialization sequence of the `adaptee` train in `Adapter`.

`adaptee` is a mandatory trait in `Adapter`, and it was initialized
like this:

```
         super(Adapter, self).__init__(**traits)
         self.adaptee = adaptee
```

The problem with this is that properties that depend on `adaptee` may be
triggered in the super-constructor, when `adaptee` is not yet defined.

The new solution:

```
         traits['adaptee'] = adaptee
         super(Adapter, self).__init__(**traits)
```

fixes that.

Note that this solution is better than:

```
         traits.adaptee = adaptee
         super(Adapter, self).__init__(**traits)
```

since in this case the trait change notification for `adaptee` is not
triggered.
Regression test for the Adapter intialization sequence.
Update change log.
Fix cyclic garbage created by use of WeakRef; add some WeakRef tests.  Fixes issue #95.
Tweak test; remove debugging print statement.
BUG: Return a true `set` in `TraitSetObject.copy()`

Otherwise, an uninitialized TraitSetObject is returned, and operations on it
will fail.

Fixes #97.
Add changelog entry.
Merge pull request #98 from enthought/fix-set-discard

BUG: Return a true `set` in `TraitSetObject.copy()`
Merge pull request #96 from enthought/fix-weak-ref-cyclic-garbage

Fix cyclic garbage created by use of WeakRef; add some WeakRef tests.
Add changelog entry for PR #96 (issue #95).
Merge pull request #99 from enthought/update-changelog

Add changelog entry for PR #96 (issue #95).
Fixed #100 cyclic garbage in TraitChangeNotifyWrapper
Merge remote-tracking branch 'origin/master' into fix/adapter-init-sequence
Mention PR number instead of commit number in CHANGES.txt
Merge pull request #93 from enthought/fix/adapter-init-sequence

Fix the initialization sequence of the `adaptee` train in `Adapter`.
Merge from origin/master; manual fixes in conf.py.
Spacing nit.