Add maybe_type() from Moose::Util::TypeConstraints

This passes Moose-t-failing/040_type_constraints/021_maybe_type_constraint.t
up to line 107 where check with no args fails.
Merge pull request #3 from schwern/bug/maybe_type

Add maybe_type() from Moose::Util::TypeConstraints
resolve a test case
fix spelling tests
Checking in changes prior to tagging of version 1.03.

Changelog diff is:

diff --git a/Changes b/Changes
index 9ddae92..e165db5 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Mouse

+1.03 2013-01-11 01:10:38
+    [FEATURES]
+    - Add maybe_type() from Moose::Util::TypeConstraints (schwern)
+
 1.02 2012-08-27 10:27:21
     [IMPROVEMENT]
     - performance improvement for v5.14.0 or grater (dex4er)
impl $attr->default($instance) for compatibility with Moose

for:
    https://github.com/schwern/sqitch/commit/3a2971c1d57bd3159c6cb785cc776f3169612730
add a test file
Checking in changes prior to tagging of version 1.04.

Changelog diff is:

diff --git a/Changes b/Changes
index e165db5..077ef68 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Mouse

+1.04 2013-01-11 01:46:18
+    [FEATURES]
+    - Implement $attr->default($instance) for compatibility with Moose
+
 1.03 2013-01-11 01:10:38
     [FEATURES]
     - Add maybe_type() from Moose::Util::TypeConstraints (schwern)
Fixed a leak introduced in Mouse 1.04
Added the test for that leak
Merge pull request #4 from creaktive/master

Slow leak introduced by v1.04
Checking in changes prior to tagging of version 1.05.

Changelog diff is:

diff --git a/Changes b/Changes
index 077ef68..8bdc326 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Mouse

+1.05 2013-02-08 00:32:33
+    [BUG FIXES]
+    - Fix a memory leak introduced by v1.04 (creaktive & aiyumi, pull-req #4)
+
 1.04 2013-01-11 01:46:18
     [FEATURES]
     - Implement $attr->default($instance) for compatibility with Moose
resolve RT#84518, caused by hash ramomization
Checking in changes prior to tagging of version 1.06.

Changelog diff is:

diff --git a/Changes b/Changes
index 8bdc326..acb93d2 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Mouse

+1.06 2013-04-09 23:40:02
+    [TEST FIXES]
+    - Resolve RT#84518 caused by hash randomization
+
 1.05 2013-02-08 00:32:33
     [BUG FIXES]
     - Fix a memory leak introduced by v1.04 (creaktive & aiyumi, pull-req #4)