2 These release notes contain the following issues:
6 - Required configuration changes
9 There are numerous other changes that may not be apparent in the daily operation of a typical user. Technical details of all the the changes are listed in the [project management area](https://labs.riseup.net/code/projects/tails/issues?utf8=%E2%9C%93&set_filter=1&f[]=status_id&op[status_id]=%3D&v[status_id][]=11&f[]=&c[]=status&c[]=priority&c[]=fixed_version&c[]=subject&c[]=category&c[]=cf_15&c[]=assigned_to&c[]=cf_9&group_by=category.)
13 - **Electrum Bitcoin** is an easy to use Bitcoin wallet provided as an optional installation. You can manually install Electrum Bitcoin with the [Installing Electrum Bitcoin procedure](https://tails.boum.org/ikiwiki.cgi?page=doc%2Fanonymous_internet%2Felectrum&from=blueprint%2Fversion_1.3&do=create.).
15 - Tor Bridges now support the **obfs4** pluggable transport. Pluggable transports transform the Tor traffic between the client and the bridge. The obfs4 pluggable transport provides an additional pluggable transport to help disguise Tor traffic from censors.
17 - The **Keyringer program** is an optional installation. Keyringer lets you manage and share secrets. You can manually install Keyringer with the [Installing Keyringer procedure](https://tails.boum.org/ikiwiki.cgi?page=doc%2Fencryption_and_privacy%2Fkeyringer&from=blueprint%2Fversion_1.3&do=create).
19 ## Upgrades and changes
21 - The **Tor Browser** has additional operating system and data **security**. This security restricts reads and writes to a limited number of folders. [Learn more](https://tails.boum.org/doc/anonymous_internet/Tor_Browser/index.en.html#confinement) about how to manipulate files with the Tor Browser.
22 - The **Ibus Vietnamese input method** is now supported.
23 - The **maximum key-size for OpenPGP smartcards** is increased from 3072 to 4096-bits for better smartcard security.
24 - The **Mac and Linux installation** processes no longer require the isohybrid command. Removing the isohybrid command simplifies the installation.
25 - The **tap-to-click** and **two-finger scrolling** trackpad settings are now enabled by default. This should be more intuitive for Mac users.
28 ## Required configuration changes
29 You must manually configure Pidgin to use the Tor browser.
31 - Configure Pidgin with the following procedure:
34 * Enable persistence without the read-only option
37 <span class="menuchoice">
38 <span class="guimenu">Tools</span> ▸
39 <span class="guimenuitem">Preferences</span>
41 * Click the <span class="guilabel">Browser</span> tab
42 * Type `/usr/local/bin/tor-browser %s` in the <span
43 class="guilabel">Manual</span> field
44 * Click <span class="button">Close</span>
47 See the current list of [Known issues](https://tails.boum.org/support/known_issues/index.en.html).