**//LabLISP versions.//**

Change log of important versions.

Version 1.5.1.4 on 20.01.2025:
  * 31 real math functions like ''SIN'', ''SQRT'', etc.
  * updated ''ROUND'' with divisor, and added ''FLOOR'', ''CEILING'', ''TRUNCATE''
  * bugfix: CA..DR type functions now know their names
  * bugfix: function arguments are evaled in the local temporary context

Version 1.5.1.0 on 27.08.2024:
  * LabLispHost added support for extension to LabApps::Device with initSymbols()
  * LabLispHost can provide optional packages

Version 1.5.0.5 on 27.05.2024:
  * Serious refactoring of c++ code, but no changes in LabLisp
  * Only new function ''time-stamp''
  * For Qt 5.15.2 and c++17, compiles with mingw 8.1 64bit
  * Separate c++ modules: IDE, ProcessControl and Environment
  * Now the hosting app just needs to create IDE, thread and window are then included automagically
  * Simplified attachment of LabLispHost
  * Interface for hosted functions is streamlined

Version 1.3.4.0 on 07.03.2023:
  * Small polishing of code, shorter waiting time, now 10 ms.
  * Introduced form and result history symbols ''+'', ''++'', ''+++'', ''*'', etc. ''/'', etc. 

Version 1.3.3.0 on 05.12.2022:
  * Big rewrite of Reader, introduces reading modes ''#" "#'', ''#* *#'' and anchor ''#1='' and link ''#1#'' system.
  * Reader now issues comments on syntax errors, but handles them elegantly.
  * Reader dot operator ''.'', together with the anchor-link system allows creation of cyclic lists directly from reader.
  * Although lablisp is safe against cyclic data lists, the eval algorithm itself is not - please do not write cyclic programs.
  * Special opearator '',.'' aka ''hard-splice''.
  * Process can be aborted with ''self-kill''.

Version 1.3.0.1 on 29.03.2022:
  * All functions safe against cyclic data lists.
  * ''proper-list-p'' predicate.
  * Printing safely cyclic lists, option ''*print-shared*'' for non-cyclic, but shared list structure.
  * Destruction of dropped cyclic list is still not handled and will leak memory.
  * Function definitions with ''&optional'' and ''&rest'' parameters, also ''&whole'' and ''&body'' for macros.
  * List-making functions ''nconc'' and ''append''.
  * Application functions ''mapcar'', ''maplist'', ''mapcan'', ''mapcon'', ''mapc'' and ''mapl''.
  * Comments and warnings come with ";" prepended.

Version 1.2.8.0 on 07.09.2021
  * Major change that introduces multiple values, as in function ''intern'', ''find-symbol'', ''macroexpand''.
  * Multiple-valued ''round'' and ''values'' functions.
  * Rewrote the macro system, now local macros are possible with ''macrolet''.
  * ''macroexpand'' and ''macroexpand-1'' now behave properly.
  * Introduced setf-able places, and ''setf'' special form.
  * Accessors ''nthcdr'', ''first'' to ''tenth'', also ''rest''.
  * Function ''last''.
  * The setf-able places make it possible to create cyclic lists, and that leads to crashes - don't make cyclic lists! 

Version 1.2.6.4 on 07.07.2021
  * Changes to symbol bindings, allows ''defconstant''.
  * String functions ''write-to-string'' and ''concatenate''.
  * Function ''set''.
  * Integer atom now works with long long integer type.
  * User accessible flag ''*allow-non-literal-const*''.  

Version 1.2.6.0 on 14.05.2021
  * Small change to the LabLispHost attachment. Polishing the multi-process evaluation algorithms internally.
  * ''sleep'' special function.
  * ''dolist'' and ''dotimes'' now accept optional result form.
  * Special forms ''flet'' and ''labels'' for local function definitions. 
  * ''load'' now has optional argument to make it silent.

Version 1.2.5.3 on 20.04.2021
  * Applicative functions ''funcall'' and ''apply''.
  * ''cond'' special operator.
  * ''setq'' now accepts multiple pairs. 

Version 1.2.4.7 on 09.04.2021
  * Changed the old read/eval mechanism for the expansions of quoting characters, now they are done by reader already.
  * Split the value and function namespaces.
  * To that, adding ''boundp'', ''fboundp'', ''symbol-value'', ''symbol-function'', ''functionp'', ''packagep'', ''special-operator-p''.
  * ''function'' and sharp-quote (''#’'') expansion.

Version 1.2.3.7 on 26.01.2021
  * Rebuilt LabLispHost attachment mechanics.
  * Functions ''read'' and particularly ''load''.
  * Added ''integerp''.
  * Rebuilt lexical closures, now free variables from closure are evaluated in the dynamic environment.
  * Introduced ''lambda'' form.

Version 1.2.3.0 on 12.12.2020
  * Added several functions for packaging: ''make-symbol'', ''intern'', ''import'', ''export'', ''unintern'', ''unexport'', ''package-use-list'', ''package-used-by-list'', ''package-internal-symbols'', ''package-external-symbols'', ''unuse-package''.
  * Whole packaging system is upgraded to work pretty much as in Common LISP, but still missing shadowing of symbols.
  * Reader and printer follow the colon and double colon rules for external and internal symbols in packages.
  * Renamed the predicate functions to be consistent with Common LISP (''symbolp'' instead of ''symbol?'' etc.).
  * In general, realized that it make sense to stick to Common LISP language.
  * Corrected some hidden artefacts of quoting.

Version 1.2.1.5 on 19.11.2020
  * Macro system with ''defmacro'' and ''macroexpand'' function.

Version 1.2.0.6 on 04.11.2020
  * Fixed the command history and colors in output window.
  * Generalized the constant function to symbols and lists (constant expressions).
  * Whole multithreaded processing with ''name-process'' and ''kill'' functions.
  * Smart ''wait''.
  * Backquoting, unquoting and splicing.

Version 1.1.1.9 was initially deployed in lab on 16.07.2020
  * Single LISP expression eval. 
  * Very basic dialect, no macros, no lexical closures, single value and function namespace.