;update ANNOUNCE

doc/ANNOUNCE

@@ -1,4 +1,4 @@
-I'm pleased to announce hledger 1.17 !
+I'm pleased to announce hledger 1.18.
 
 hledger is a robust, cross-platform, plain text accounting tool, with
 command-line, terminal and web UIs. It is a modern and largely
@@ -9,34 +9,28 @@ inventory and more. See:
 http://hledger.org
 http://plaintextaccounting.org
 
-hledger 1.17 is released on schedule on 2020-03-01.
-Thanks to release contributors Aleksandar Dimitrov, Brian Wignall,
-Stephen Morgan, Jacek Generowicz, Gaith Hallak, Eric Mertens, Jakob
-Schöttl, Carl Richard Theodor Schneider, David Zhang, Amarandus,
-Evilham, Mateus Furquim, and Rui Chen.
-
 HIGHLIGHTS:
 
-CSV single-field matching, 
-easier SSV/TSV conversion,
-fixed/enhanced close command, 
-undo in add command,
-more JSON output, 
-org headline support in timedot format,
-GHC 8.10 support.
+Fixed JSON output;
+market prices inferred from transactions;
+more Ledger file compatibility;
+more flexible journal entries from CSV;
+misc. fixes and improvements.
 
 See all changes at https://hledger.org/release-notes .
+Thanks to release contributors Stephen Morgan, Dmitry Astapov, Henning
+Thielemann, Andriy Mykhaylyk, Pavan Rikhi, and Vladimir Sorokin.
 
 GETTING STARTED:
 
 Many install methods are described at http://hledger.org/download. 
 Here are three ways to build from source:
 
-  stack update; stack install --resolver=lts hledger-lib-1.17 hledger-1.17 hledger-ui-1.17 hledger-web-1.17 --silent
+  stack update; stack install --resolver=lts hledger-lib-1.18 hledger-1.18 hledger-ui-1.18 hledger-web-1.18 --silent
 
 or:
 
-  cabal v2-update; cabal v2-install hledger-1.17 hledger-web-1.17 hledger-ui-1.17
+  cabal v2-update; cabal v2-install hledger-1.18 hledger-web-1.18 hledger-ui-1.18
 
 or: