use edge version of tree-sitter-compiler on travis

.travis.yml

@@ -1,5 +1,6 @@
 language: node_js
 before_script:
+  - "script/get_edge_deps"
   - "tree-sitter compile"
   - "npm install"
 node_js:

script/get_edge_deps

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -e
+
+TS_DIR=node_modules/tree-sitter-compiler
+
+rm -rf $TS_DIR
+git clone http://github.com/maxbrunsfeld/node-tree-sitter-compiler.git $TS_DIR
+
+(
+  cd $TS_DIR
+  git submodule update --init
+  npm install
+)