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== Release 2.2
* Fix a problem with the ANSI C target when the program had bit and
integer variables with the same name. Note that this changes the
names of the symbols in the generated C program; so a system that
uses "magic variables" with this target for I/O must be updated
to use the new names.
* Fix a subtle bug in the PIC16 add and subtract routines, where
operations of the form B = A - B could fail.
* The piecewise linear tables were broken for the AVRs; fix that.
== Release 2.1
* For the AVR UARTs, poll UDRE instead of TXC. The formatted string op
was broken on some targets, should now be fixed.
* Don't draw selected op in bold font; that looks ugly under Vista.
== Release 2.0
* Add PIC16F886 and PIC16F887 targets.
* Fix display bug in the list to select an I/O pin.
* Fix bug where PIC16 UART locks up forever after a framing error when
the cycle time is faster than one byte time.
* Fix bug where PIC16 outputs could briefly glitch high at startup.
* Clear PCLATH in PIC16 boot vector, since some bootloaders expect that.
== Release 1.9
* Modify PIC16 boot vectors to work with many bootloaders.
== Release 1.8
* Fix modification of a constant string that blew up in new MSVC++
compiler.
* Add Italian, Turkish, Portuguese.
== Release 1.7
* Make the source compile with latest version of MSVC++; overloaded
functions behave a bit differently.
* Recover from (and ignore) UART errors on the PIC16 target, instead
of getting stuck forever.
* Whenever contacts bound to an output pin (Yfoo) were edited, they
reverted to an input pin (Xfoo); now fixed.
* Don't abort on too-wide program; instead display nice message.
* It was possible (by adding and deleting contacts/coils with the
same name) to end up with two bit variables bound to the same
physical I/O pin; now fixed.
* File -> Open was correct, but Ctrl+O failed to ask about unsaved
changes before opening requested file; now both are correct.
* Add Spanish user interface strings.
== Release 1.6
* Internationalize the user interface strings; we now have versions
in English, French, and German.
* First source release, under the GPLv3.
== Release 1.5
* Add untested support for ATmega32.
* Remove annoying lag in user interface when editing large (hundreds
of ops) programs
== Release 1.4
* Fix a terrible bug in the target for the ATmega8; because there is
no PORTA/DDRA/PINA, I broke an assumption in my code and failed
to set up the port directions.
== Release 1.3
* Timer delays are represented as a signed 32-bit integer count
of microseconds. If the user provides a delay >= 2**31 us, then
show an error instead of just letting things wrap.
* Change the start-up behaviour of TOF timers. Previously they would
start from a count of zero, so they would be on (independent of
rung-in) until they counted themselves off. Now they start out
at full count (as if rung-in has been low for a very long time),
so rung-out is low until rung-in goes high.
== Release 1.2
* Add an untested target for the ATmega8
* Add a special instruction to simplify piecewise linear tables
* Fix some user interface bugs: it was possible to drag the top of the
I/O list so high that you couldn't grab it again, and there were
some cases in which the pin number associated with UART and PWM
variables was not displayed
== Release 1.1
* Fix persistent variables, which were broken for the PIC16F628
== Release 1.0
* Fix bug in which the filename that appears in the title bar of the
main window failed to get updated when opening/saving a file using
the keyboard shortcuts (Ctrl+O/+S)
* Fix simulation crash when the ladder logic program divides by zero
* Fix jumpy scrolling on programs with many rungs of logic when the
cursor is off-screen
== Release 0.9
* Fix bug with formatted string op on the AVR
* Fix previously-untested ATmega16 and ATmega162 targets, which were
completely broken
=== Release 0.8
* Fix PORTA on the PIC16F819 (came up assigned to ADCs, of course)
=== Release 0.7
* Support arbitrary character (\xAB) escapes in formatted string op
* Fix a bug in which the title bar of the main window was not updated
=== Release 0.6
* Add formatted text output over serial (e.g. to an LCD or a PC)
* Add ability to make variables persistent (i.e. auto-saved in EEPROM)
* Add look-up table instructions
* Fix a bug with the PORTE pins on some AVRs
* Fix miscellaneous user interface bugs
=== Release 0.5
* Interpretable byte code target
* Shift register and master control relay instructions
=== Release 0.4
* Make ADCs work on the AVRs
=== Release 0.3
* Support serial for AVR
* Support PWM for PIC16 and AVR
* Show program filename in title bar of main window
* Untested support for PIC16F88, F819, F876
* Generate ANSI C code from ladder diagram
=== Release 0.2
* Support serial communications (using UART), PIC16 only
* Support ADC reads, PIC16 only
* Simulation environment for ADC and serial
* Support ASCII character constant ('a') literals
* Fix PORTA pins in PIC16F628 (should assign as GPIO, not to comparator)
* Make file open/save dialogs work under Win98
* Fix PORTA/PORTE pins in PIC16F877 (should assign as GPIO, not to ADC)
* Add ability to comment your program
* Fix bug when a relative filename is given on the command line and
the `Compile As' dialog is later used to specify a destination in
a different directory
=== Release 0.1
Initial release
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