Update files for 2.3.0 release.

CHANGES

@@ -6,6 +6,13 @@ who contributed the patch or idea appears first, followed by
 those who've otherwise worked on that item. For a list of 
 contributors names and identifiers please see the CONTRIBUTORS file.
 
+Changes from 2.2.1 to 2.3.0:
+
+ - Add --cache option to speed up file comparisons.
+ - Use nanosecond precision for file times, if available.
+ - Fix compilation issue on OpenBSD.
+ - Other changes like fixing typos, wording, etc.
+
 Changes from 2.2.0 to 2.2.1:
 
  - Fix bug in code meant to skip over the current log file when --log

README

@@ -19,6 +19,19 @@ Usage: fdupes [options] DIRECTORY...
                          option will change this behavior
  -G --minsize=SIZE       consider only files greater than or equal to SIZE bytes
  -L --maxsize=SIZE       consider only files less than or equal to SIZE bytes
+ -c --cache              speed up file comparisons by keeping track of their
+                         signatures in a database; additional parameters may be
+                         provided using one or more cache parameters (as below)
+ -x cache.OPTION         supply an optional cache parameter, where OPTION is one
+                         of the keywords below and multiple options may be
+                         supplied via successive -x arguments:
+    readonly             read but do not update file signatures
+    prune                look through entire cache and delete orphaned entries
+    clear                clear all entries from cache
+    vacuum               reduce size of DB file, if possible
+                         (note that the options prune, clear, and vacuum may be
+                         employed without supplying a DIRECTORY argument, and
+                         will take effect even if readonly is also specified)
  -n --noempty            exclude zero-length files from consideration
  -A --nohidden           exclude hidden files from consideration
  -f --omitfirst          omit the first file in each set of matches

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([fdupes], [2.2.1])
+AC_INIT([fdupes], [2.3.0])
 
 AM_INIT_AUTOMAKE([foreign subdir-objects])