docs: 0.20 announcement

ANNOUNCE

@@ -1,24 +1,108 @@
-I'm pleased to announce hledger-web 0.19, compatible with the latest
-hledger and Yesod.
-
-Release notes:
-
-  * web: builds with yesod 1.1.3
-
-  * web: obeys command-line query options at startup again
-
-  * the autogenerated session file is now a dot file
-    (.hledger-web_client_session.aes)
+I'm pleased to announce hledger and hledger-web 0.20!
 
 hledger is a command-line tool and haskell library for tracking
 financial transactions, which are stored in a human-readable plain
 text format. In addition to reporting, it can also help you record new
 transactions, or convert CSV data from your bank. Add-on packages
-include hledger-web, a web interface. hledger is inspired by and
-compatible with John Wiegley's Ledger. For more, see http://hledger.org .
+include hledger-web (providing a web interface), hledger-irr and hledger-interest.
+
+hledger is inspired by and compatible with John Wiegley's Ledger. For
+more, see http://hledger.org .
 
 Install it:
 
 cabal update; cabal install hledger-web
+
 For more installation help, see http://hledger.org/MANUAL.html#installing .
 Or, sponsor a ready-to-run binary for your platform: http://hledger.org/DOWNLOAD.html .
+
+Release notes (http://hledger.org/NEWS.html#hledger-0.20):
+
+**Bugs fixed:**
+
+  * balance: a 0.19 regression which showed wrong total balance with `--flat` has been fixed (#94)
+  * register: when `--date2` is used, the register is now sorted by the secondary date
+  * web: some missing static & template files have been added to the package, fixing cabal-dev and hackage builds (#97, #98)
+  * web: some hardcoded static urls have been fixed
+  * Dependencies and code have been updated to support the latest
+    libraries and GHC versions.  For now, hledger requires GHC 7.2+
+    and hledger-web requires GHC 7.4+.
+
+**Journal reading:**
+
+  - DOS-style line-endings are now also supported in journal and rules files.
+  - `!` is now accepted in the status field as well as `*`, like ledger
+  - The *actual date* and *effective date* terminology has changed to *primary date* and *secondary date*.
+    Use `--date2` to select the secondary date for reports. (`--aux-date` or `--effective` are also accepted
+    for ledger and backwards compatibility).
+  - Per-posting dates are supported, using hledger tags or ledger's posting date syntax
+  - Comment and tag handling has been improved
+
+**CSV reading:**
+
+  - CSV conversion rules have a simpler, more flexible [syntax](MANUAL.html#csv-files).
+    Existing rules files will need to be updated manually:
+    - the filename is now `FILE.csv.rules` instead of `FILE.rules`
+    - `FIELD-field N` is now `FIELD %N+1` (or set them all at once with a `fields` rule)
+    - `base-currency` is now `currency`
+    - `base-account` is now `account1`
+    - account-assigning rules:
+      add `if` before the list of regexps,
+      add indented `account2 ` before the account name
+  - parenthesised amounts are parsed as negative
+
+**Querying:**
+
+  - Use `code:` to match the transaction code (check number) field
+  - Use `amt:` followed by `<`, `=` or `>` and a number N to match
+    amounts by magnitude. Eg `amt:<0` or `amt:=100`. This works only
+    with single-commodity amounts (multi-commodity amounts are
+    always matched).
+  - `tag:` can now match (exact, case sensitive) tag values. Eg `tag:TAG=REGEXP`.
+
+**add comand:**
+
+  - Transaction codes and comments (which may contain tags) can now be entered, following a date or amount respectively. (#45)
+  - The current entry may be restarted by entering `<` at any prompt. (#47)
+  - Entries are displayed and confirmed before they are written to the journal.
+  - Default values may be specified for the first entry by providing them as command line arguments.
+  - Miscellaneous UI cleanups
+
+**register command:**
+
+  - The `--related`/`-r` flag shows the other postings in each transaction, like ledger.
+  - The `--width`/`-w` option increases or sets the output width.
+
+**web command:**
+
+  - The web command now also starts a browser, and auto-exits when unused, by default ("local ui mode").
+    With `--server`, it keeps running and logs requests to the console ("server mode").
+  - Bootstrap is now used for styling and layout
+  - A favicon is served
+  - The search field is wider
+  - yesod devel is now supported; it uses `$LEDGER_FILE` or `~/.hledger.journal`
+  - the `blaze_html_0_5` build flag has been reversed and renamed to `blaze_html_0_4`
+
+**Add-ons:**
+
+  - The hledger-interest and hledger-irr commands have been released/updated.
+  - hledger-chart and hledger-vty remain unmaintained and deprecated.
+
+**Documentation and infrastructure:**
+
+  - The hledger docs and website have been reorganised and updated
+  - Manuals for past releases are provided as well as the latest dev version
+  - hledger has moved from darcs and darcs hub to git and github (!)
+  - The bug tracker has moved from google code to github
+  - Feature requests and project planning are now managed on trello
+  - A build bot builds against multiple GHC versions on each commit
+
+Release contributors:
+
+- Sascha Welter commissioned register enhancements (--related and --width)
+- David Patrick contributed a bounty for add enhancements
+- Joachim Breitner added support for ! in status field
+- Xinruo Sun provided hledger-web build fixes
+- Peter Simons provided hledger-web build fixes, and a build bot
+- Marko Kocić provided hledger-web fixes
+