Finding the artifact path on initialization improves relocatability (#134)

* Finding the artifact path on initialization improves relocatability

* Bump version to 0.14.1

Author: ven-k

Project.toml

@@ -1,7 +1,7 @@
 name = "ECOS"
 uuid = "e2685f51-7e38-5353-a97d-a921fd2c8199"
 repo = "https://github.com/jump-dev/ECOS.jl.git"
-version = "0.14.0"
+version = "0.14.1"
 
 [deps]
 CEnum = "fa961155-64e5-5f13-b03f-caf6b980ea82"

src/ECOS.jl

@@ -10,7 +10,6 @@
 module ECOS
 
 import ECOS_jll
-const ecos = ECOS_jll.libecos
 
 using CEnum
 
@@ -35,6 +34,7 @@ end
 include("MOI_wrapper/MOI_wrapper.jl")
 
 function __init__()
+    global ecos = ECOS_jll.libecos
     libecos_version = VersionNumber(unsafe_string(ECOS_ver()))
     if libecos_version != v"2.0.8"
         error(