Reorganize WP changelog for Calcium

src/plugins/wp/Changelog

@@ -26,22 +26,22 @@ Plugin WP 20.0 (Calcium)
 
 - TIP         [2019/09/17] Using all selected Why-3 provers for proof search
 - Gui         [2019/09/17] Updated panel for provers, models, cache, etc.
-- WP          [2019/09/16] Removed option -wp-include
-- WP          [2019/09/16] Removed option -wp-why3
-- WP          [2019/09/16] Removed option -wp-why-lib
-- WP          [2019/09/16] Removed option -wp-depth
-- WP          [2019/09/16] -wp-why-opt renamed -wp-why3-opt
 - WP          [2019/09/12] New cache mechanism for why3 provers, see -wp-cache option
-- WP          [2019/09/11] -wp-extensional now defaults to true
-- WP          [2019/09/11] -wp-init-const now defaults to true
-- WP          [2019/09/11] -wp-init-alias renamed -wp-alias-init
-- WP          [2019/09/11] -wp-script renamed -wp-coq-script
-- WP          [2019/09/11] -wp-update-script renamed -wp-update-coq-script
-- WP          [2019/09/11] -wp-tactic renamed -wp-coq-tactic
-- WP          [2019/09/11] -wp-tryhints renamed -wp-coq-tryhints
-- WP          [2019/09/11] -wp-hints renamed -wp-coq-hints
 -! WP         [2019/09/17] Deprecated native alt-ergo & coq output, see -wp-prover option
--! WP         [2019/07/05] -wp-prover <p> now defaults to <why3:p> (including default alt-ergo)
+- WP          [2019/09/16] Deprecated & Renamed -wp-script into -wp-coq-script
+- WP          [2019/09/16] Deprecated & Renamed -wp-update-script into -wp-update-coq-script
+- WP          [2019/09/16] Deprecated & Renamed -wp-tactic into -wp-coq-tactic
+- WP          [2019/09/16] Deprecated & Renamed -wp-tryhints into -wp-coq-tryhints
+- WP          [2019/09/16] Deprecated & Renamed -wp-hints into -wp-coq-hints
+- WP          [2019/09/16] Renamed -wp-why-opt into -wp-why3-opt
+- WP          [2019/09/16] Renamed -wp-init-alias into -wp-alias-init
+- WP          [2019/09/16] Removed -wp-include
+- WP          [2019/09/16] Removed -wp-why3
+- WP          [2019/09/16] Removed -wp-why-lib
+- WP          [2019/09/16] Removed -wp-depth
+- WP          [2019/09/16] Default -wp-extensional changed to true
+- WP          [2019/09/16] Default -wp-init-const changed to true
+-! WP         [2019/07/05] Default -wp-prover <p> changed to <why3:p> (including default alt-ergo)
 -! WP         [2019/07/05] Use native Why3 API (now requires why3 at compile time)
 - WP          [2019/06/27] Improving Cint simplifier and quantifier introduction
 o Qed         [2019/06/27] More secure API for quantifier management