Heptagon 1.03.04 (24/05/2017)
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 - Bug correction in init analysis (bug #14076)
 - Bug correction in causality analysis: contradictory dependencies
   in states of automata were accepted, non schedulable equations generated
 - optimization on several passes
 - added -simple-scheduler option, triggering very simple, time-efficient
   scheduling

Heptagon 1.03.03 (14/03/2017)
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 - Correction in Ctrl-n backend: suppression of erroneous "c_" prefixes
 - Correction in Ctrl2ept: no systematic conversion from int to float
 - Correction in Ctrl-n backend: handling of implication and "xor" operators

Heptagon 1.03.02 (08/02/2017)
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 - Added operator '=>' (logical implication)
 - Systematic sink state in Ctrl-n backend, outputs as local variables

Heptagon 1.03.01 (02/06/2016)
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 - Correct typing of numericals when translating Controllable-Nbac nodes
 - Handling of several controllers by module and correct modular controller synthesis
 - Correction of Java target with controllers

Heptagon 1.03.00 (18/01/2016)
-----------------------------

 - -deadcode option, improvement of deadcode removal
 - graphical simulator handles type aliasing

Heptagon 1.02.00 (13/12/2015)
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 - syntax for attractivity and reachability in contracts
 - option to force abstraction of infinite-domain state variables (ctrl-n)

Heptagon 1.01.00 (17/09/2015)
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 - back-end towards controller synthesis tool ReaX

Heptagon 1.00.06 (21/02/2014)
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 - allowed abstractions (non-inlined subnodes calls) in contracts

Heptagon 1.00.05 (28/01/2014)
-----------------------------

 - bug fix: correct handling of nodes with contracts inside automata and switches

Heptagon 1.00.04 (14/01/2014)
-----------------------------

 - bug fix: comparison between two non-constant integer expressions in Sigali
 - bug fix: correct handling of "=" and "<>" operators in Sigali

Heptagon 1.00.03 (20/11/2013)
-----------------------------

 - bug fix: tomato application with contracts

Heptagon 1.00.02 (29/10/2013)
-----------------------------

 - scrollbars in graphical simulator hepts

Heptagon 1.00.01 (05/08/2013)
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 - bug fix : abstraction of integer in Sigali code generation