[pstricks] not backwards compatible

[Daan Krammer]

Hi,

I've noted that every now and then, pstricks is getting updated 
in a way NOT BACKWARDS COMPATIBLE.

This is not a good idea. One of the most important and basic 
rules for a software programmer is to keep things backwards 
compatible. Imagine they didn't... then we might as well throw 
our computers away.

Whomever is responsible for this, I would like to urge, in the 
future, to make only updates that are backwards compatible.

Moreover, I would be very grateful if people would be able to 
make things backwards compatible again. I've got lots of pstricks 
pictures involving dashed lines and I am worried I will need to 
file two versions of them, one for each update. Perhaps though, 
the damage that has already been done cannot be undone, by 
definition (you can't make incompatible command syntaxes 
compatible).

I am aware of and grateful for the useful work done by the 
authors and maintainers of pstricks. I have been a happy user of 
pstricks for a long time and hope it can stay that way.

Daan