Update for 4.2 release

Download.md

@@ -4,6 +4,71 @@ Latest stable release, older releases and Git SCM daily snapshots.
 
 ## Latest release ##
 
+### [4.2](https://github.com/Hamlib/Hamlib/releases/tag/4.2) ###
+
+#### Release notes ####
+
+Version 4.2 2021-05-17
+ * New `rig_get_mode_bandwidths` -- returns token set for bandwidths for a given mode:
+     ```
+     Rig command: \get_mode_bandwidths CW
+     Mode=CW
+     Normal=500Hz
+     Narrow=50Hz
+     Wide=2400Hz
+     ```
+ * New `rig_get_info`  -- returns token set for all vfos where order does not matter
+   This is a string return to allow for easy future expansion without changing the API
+   New tokens may be introduced and can be skipped if not used by clients:
+     ```
+     Rig command: \get_rig_info
+     VFO=Main Freq=145000000 Mode=None Width=0 RX=1 TX=1
+     VFO=VFOB Freq=145000000 Mode=FM Width=15000 RX=0 TX=0
+     Split=0 SatMode=0
+     Rig=Dummy
+     App=Hamlib
+     Version=20210429
+     CRC=0xf49f4708
+     ```
+ * New `rig_get_vfo_info`:
+     ```
+     Rig command: \get_vfo_info VFOA
+     Freq: 145000000
+     Mode: None
+     Width: 0
+     Split: 0
+     SatMode: 0
+     ```
+ * `FILPATHLEN` has changed to `HAMLIB_FILPATHLEN`.
+
+ * USRP lib and gnuradio are deprecated and will be removed in 5.0
+ * Added Radan rotator
+ * Added Malachite SDR
+ * Major rework for PRM80
+ * Add `twiddle_timeout` and `twiddle_rit` `--set-conf` options:
+     ```
+     rigctld --set-conf=twiddle_timeout=5,twiddle_rit=1
+     ```
+     * This will set the twiddle timeout to 5 seconds and turn on `twiddle_rit`.
+     * For twiddle timeout VFOB will not be polled for 5 seconds after VFO twiddling
+       is detected.
+ * `rigctld --twiddle` is deprecated and will be removed in 5.0 along with
+   `get_twiddle` and `set_twiddle`.
+ * Rework [Doxygen](https://www.doxygen.nl/index.html) manual including
+   default layout for Doxygen 1.9.1.  So far the
+   [amplifier](http://hamlib.sourceforge.net/manuals/4.2/group__amplifier.html),
+   [rotator](http://hamlib.sourceforge.net/manuals/4.2/group__rotator.html),
+   and
+   [utilities](http://hamlib.sourceforge.net/manuals/4.2/group__utilities.html)
+   API sections have been updated.  The rig (radio) section remains to be
+   updated.
+
+
+## Older stable releases ##
+
+As these versions are still found in many Linux/BSD distributions, their
+information is included.
+
 ### [4.1](https://github.com/Hamlib/Hamlib/releases/tag/4.1) ###
 
 #### Release notes ####
@@ -20,12 +85,6 @@ Version 4.1 2021-01-31
  * Fix shared library problem with WSJTX, JTDX, and JS8Call.
  * New model Barrett 950.
 
-
-## Older stable releases ##
-
-As these versions are still found in many Linux/BSD distributions, their
-information is included.
-
 ### [4.0](https://github.com/Hamlib/Hamlib/releases/tag/4.0) ###
 
 #### Release notes ####