Should have committed earlier

Lots of changes:
- Article about IPC
- New TUWF release
- New ncdu release
- Atom feeds for the bug tracker
- Bug tracker switch to sqlite

dat/ncdu-man

@@ -97,6 +97,12 @@ option has no effect when C<-o> is used, because there will not be a browser
 interface in that case. It has no effect when C<-f> is used, either, because
 the deletion feature is disabled in that case anyway.
 
+=item --si
+
+List sizes using base 10 prefixes, that is, powers of 1000 (KB, MB, etc), as
+defined in the International System of Units (SI), instead of the usual base 2
+prefixes, that is, powers of 1024 (KiB, MiB, etc).
+
 =back
 
 =head2 Scan Options
@@ -204,6 +210,14 @@ Show information about the current selected item.
 
 Refresh/recalculate the current directory.
 
+=item b
+
+Spawn shell in current directory.
+
+We first check the $SHELL environment variable of the user for the preferred
+shell interpreter. If it's not set, we fall back to the compile time
+configured default shell (usually /bin/bash).
+
 =item q
 
 Quit
@@ -296,7 +310,7 @@ directory larger than 8 EiB minus one byte, ncdu will clip its size to 8 EiB
 minus one byte.
 
 Please report any other bugs you may find at the bug tracker, which can be
-found on the web site at http://dev.yorhel.nl/ncdu
+found on the web site at https://dev.yorhel.nl/ncdu
 
 
 =head1 AUTHOR