Move launcher icon to @mipmap and add xxxhdpi version
Update SlideMe market app link to directly open the SAM app
FIX user reported bug: Make sure podcast feed URL is HTML-encoded
Version X.2.3
Another gradle update
Review media button receiver code, in particular make the headset hook key pause not toggle
FIX: Pressing the home button does not navigate up when "Select all on startup" is on.

This was because the NavUtils re-create the PodcastActivity each time, setting its launchMode to singleTop fixes that.
Rename app in Copyright header
Make sure to sanitize all data written to OPML files.

Otherwise, reading them might fail, causing all kind of bad situations. In particular the URL for the feed and the logo should not contain invalid characters. Also we will base64-encode the user name and password, since we do not control its contents.