Checking in changes prior to tagging of version 1.59_02.

Changelog diff is:

diff --git a/Changes b/Changes
index b2ba325..081828b 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,12 @@
 See http://github.com/miyagawa/cpanminus/ for the latest development.

+1.59_02 Thu Jan 31 19:09:43 PST 2013
+   [New Features]
+      - Added experimental @ shortcut to mean exact version e.g. cpanm DBI@1.20
+      - Support version range with "~", such as cpanm DBI~">= 1.0, < 2.0"
+      - Enable metacpan release search when exact version is given (and when mirror-only is not specified)
+        i.e. cpanm DBI@1.100 will fetch the exact release based on metacpan
+
 1.59_01 Thu Jan 31 09:54:50 PST 2013
    [New Features]
       - Added a proper support for version range in MYMETA files using CPAN::Meta::Requirements