add release notes for 0.2.1, update readme

README.md

@@ -14,8 +14,8 @@ Widespread use of JoinMarket could improve bitcoin's fungibility as a commodity.
 
 ##Installation
 
-#####A NOTE ON UPDATING
-The installation is slightly changed, with the secp256k1 python binding no longer being optional, and libnacl now being installed via pip, not locally. The short version is: do follow the below process, for example the secp256k1 binding must be the latest version else you'll get errors. Of course if you already have libsodium you don't need to re-install it. Be sure to read the [release notes](https://github.com/JoinMarket-Org/joinmarket/blob/develop/doc/release-notes-0.2.0.md).
+#####A NOTE ON UPDATING FROM PRE-0.2 VERSIONS
+The installation is slightly changed, with the secp256k1 python binding no longer being optional, and libnacl now being installed via pip, not locally. The short version is: do follow the below process, for example the secp256k1 binding must be the latest version else you'll get errors. Of course if you already have libsodium you don't need to re-install it. Be sure to read the [release notes](https://github.com/JoinMarket-Org/joinmarket/blob/develop/doc/release-notes-0.2.1.md).
 
 #####REQUIRED INSTALLATION DEPENDENCIES (for Linux)
 
@@ -61,8 +61,8 @@ The installation is slightly changed, with the secp256k1 python binding no longe
 1. `sudo apt-get update -y && sudo apt-get upgrade -y && sudo apt-get install python libsodium-dev -y`
 2. `pip install -r requirements.txt`
 2. `sudo apt-get install python-matplotlib -y` (optional)
-3. Download JoinMarket 0.2.0 source from [here](https://github.com/joinmarket-org/joinmarket/releases/tag/v0.2.0)
-4. Extract or unzip and `cd joinmarket-0.2.0`
+3. Download JoinMarket 0.2.1 source from [here](https://github.com/joinmarket-org/joinmarket/releases/tag/v0.2.1)
+4. Extract or unzip and `cd joinmarket-0.2.1`
 4. Generating your first wallet will populate the configuration file: `joinmarket.cfg`.
    Check if the default settings suit your needs.
 

doc/release-notes-0.2.1.md

@@ -0,0 +1,44 @@
+JoinMarket 0.2.1: 
+================= 
+
+<https://github.com/joinmarket-org/joinmarket/releases/tag/v0.2.1> 
+
+This is a minor release fixing bugs in 0.2.0, however for some classes of users these bugs may be important, so please update immediately.
+
+Please report bugs using the issue tracker at github: 
+
+<https://github.com/joinmarket-org/joinmarket/issues> 
+
+Upgrading and downgrading 
+========================= 
+
+For users already running version 0.2.0 it is only required to update the Joinmarket code, i.e. either `git pull` or download the zip from the release link above.
+
+Users updating from a version pre-0.2.0 **must** carefully follow the instructions for updating in the [previous release notes](https://github.com/JoinMarket-Org/joinmarket/blob/master/doc/release-notes-0.2.0.md)
+
+Bugfixes 
+======== 
+
+The bugfixes are for these specific issues:
+
+* Windows secp256k1 binding had errors preventing correct running.
+* Use of the `--rpcwallet` flag in `sendpayment.py` failed due to a bug in privkey format.
+* `yield-generator-basic.py` had a (very!) old bug re-introduced in 0.2.0 which allowed small negative fees to occur.
+
+
+0.2.1 Change log 
+================= 
+
+- `52a85b0` Fix bug in minsize calculation for yield-generator-basic
+- `748263e` Workaround for missing custom_nonce field in old secp256k1-py code for Windows
+- `4352d1f` workaround for [bug](https://github.com/ludbb/secp256k1-py/pull/10) in underlying secp256k1-py code used in Windows binding
+- `9c954d7` remove raw binary from object dump in log 
+- `47479d5` improve log messages
+- `6a86338` Fix bug in --rpcwallet option and add test; BitcoinCoreWallet.get_key_from_addr now returns hex, not wif privkey.
+
+Credits 
+======= 
+
+Minor bugfixes by @AdamISZ.
+
+Thanks to those who submitted bug reports and otherwise helped out.