Add configuration for the new apogee-lockout value. A menu provides a list of
reasonable values, or the value can be set by hand.
</listitem>
+ <listitem>
+ Changed how flight data are downloaded. Now there's an initial
+ dialog asking which flights to download, and after that
+ finishes, a second dialog comes up asking which flights to delete.
+ </listitem>
<listitem>
Re-compute time spent in each state for the flight graph; this
figures out the actual boost and landing times instead of