Stellar Protocol 11 Compatibility (#186)

Close #179

- [x] rename `manage_offer` to `manage_sell_offer`
- [x] rename `create_passive_offer` to `create_passive_sell_offer `
- [x] add `manage_buy_offer` ([CAP-0006](https://github.com/stellar/stellar-protocol/blob/master/core/cap-0006.md))

CHANGELOG.md

@@ -3,6 +3,13 @@
 As this project is pre 1.0, breaking changes may happen for minor version bumps.
 A breaking change will get clearly notified in this log.
 
+## unreleased
+
+- Add Stellar Protocol 11 compatibility (breaking change)
+  - Rename `manage_offer` to `manage_sell_offer`.
+  - Rename `create_passive_offer` to `create_passive_sell_offer`.
+  - Add `manage_buy_offer`.
+
 ## [v0.13.2](https://github.com/stellar/js-stellar-base/compare/v0.13.1...v0.13.2)
 
 - Bring DefinitelyTyped definitions into the repo for faster updating.

Gemfile

@@ -1,7 +1,7 @@
 source "https://rubygems.org"
-gem 'xdrgen', git: '[email protected]:stellar/xdrgen.git'
+gem 'xdrgen', git: '[email protected]:stellar/xdrgen.git', branch: 'enum-standard-type-discriminant'
 # gem "xdrgen", path: "../xdrgen"
 gem 'pry'
 gem 'octokit'
 gem 'netrc'
-gem 'rake'
+gem 'rake'

Gemfile.lock

@@ -1,6 +1,7 @@
 GIT
   remote: [email protected]:stellar/xdrgen.git
-  revision: c683684abb3cb2c8b8c3dc12dc7c6cc9bf1e3b60
+  revision: 914c86ed6cee77e8e58883efe7cad4e0535b5ea0
+  branch: enum-standard-type-discriminant
   specs:
     xdrgen (0.0.1)
       activesupport (~> 5)
@@ -11,32 +12,32 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.0)
+    activesupport (5.2.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     coderay (1.1.2)
-    concurrent-ruby (1.0.5)
-    faraday (0.15.0)
+    concurrent-ruby (1.1.5)
+    faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
-    i18n (1.0.1)
+    i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     memoist (0.11.0)
-    method_source (0.9.0)
+    method_source (0.9.2)
     minitest (5.11.3)
     multipart-post (2.0.0)
     netrc (0.11.0)
-    octokit (4.8.0)
+    octokit (4.14.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     polyglot (0.3.5)
-    pry (0.11.3)
+    pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.2)
-    rake (12.3.0)
+    public_suffix (3.0.3)
+    rake (12.3.2)
     sawyer (0.8.1)
       addressable (>= 2.3.5, < 2.6)
       faraday (~> 0.8, < 1.0)
@@ -58,4 +59,4 @@ DEPENDENCIES
   xdrgen!
 
 BUNDLED WITH
-   1.13.7
+   1.17.2