added scale-factor conversions

doc/accessories.rst

@@ -42,9 +42,9 @@ circuit::
 
     > cat ~/.ecrc
     # define some functions useful in phasor analysis
-    (2pi * "rads/s")to_omega    # convert frequency in Herts to radians/s
+    (2pi * "rads/s")to_omega    # convert frequency in Hertz to radians/s
     (mag 2pi / "Hz")to_freq     # convert frequency in radians/s to Hertz
-    (j2pi * "rads/s")to_jomega  # convert frequency in Herts to imaginary radians/s
+    (j2pi * "rads/s")to_jomega  # convert frequency in Hertz to imaginary radians/s
 
     > cat ./.ecrc
     # define default values for parameters
@@ -143,7 +143,7 @@ programs that are useful in their own right, but also act as demonstrators as to
 how to use the library. They are *list-psf* and *plot-psf*.  The first lists the
 available signals in a file, and the other displays them.
 
-*QuantiPhy* is used by *plot-psf* when generating the axis lables.
+*QuantiPhy* is used by *plot-psf* when generating the axis labels.
 
 The source code is available from the `psf_utils repository
 <https://github.com/KenKundert/psf_utils>`_ on GitHub, or you can install it 

doc/releases.rst

@@ -8,11 +8,17 @@ Latest development release
 | Version: 2.19a2
 | Released: 2022-12-17
 
-- Add new standard SI scale factors (*Q*, *R*, *r*, *q*).
+
+2.19 (2023-01-??)
+-----------------
+- Added new standard SI scale factors (*Q*, *R*, *r*, *q*).
 - Subclasses of :class:`Quantity` with units now convert values to the desired 
   units rather than allowing the units of the class to be overridden by those of 
   the value.
-- Added “cover” option to *strip_radix*..
+- Added scale factor conversion.
+- Added quantity functions: :func:`as_real`, :func:`as_tuple`, :func:`render`, 
+  :func:`fixed`, and :func:`binary`.
+- Added “cover” option to *strip_radix* preference.
 - Added type hints.