bug #202 Conflict with SyliusInvoicingPlugin below 0.16.0 (Zales0123)

This PR was merged into the 1.0-dev branch.

Discussion
----------

Before [this change](Sylius/InvoicingPlugin#226), it was impossible to place the PayPal order from the Payment page, due to some problems with Invoice generation (missing number on order). Therefore, we should require at least SyliusInvoicingPlugin v0.16.0 and release a new version asap 🖖 🚀 

Commits
-------

5df3399 Conflict with SyliusInvoicingPlugin below 0.16.0
76dfc7c Fix build

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
                 node: ["10.x"]
                 mysql: ["5.7", "8.0"]
                 symfony: ["^4.4", "^5.2"]
-                sylius: ["~1.8.0", "~1.9.0", "~1.10@dev"]
+                sylius: ["~1.8.0", "~1.9.0", "~1.10.0"]
 
                 exclude:
                     -
@@ -33,7 +33,7 @@ jobs:
                         symfony: "^5.2"
                     -
                         php: "7.3"
-                        sylius: "~1.10@dev"
+                        sylius: "~1.10.0"
                     -
                         php: "8.0"
                         sylius: "~1.8.0"

composer.json

@@ -43,7 +43,8 @@
     },
     "conflict": {
         "symfony/doctrine-bridge": "4.4.16",
-        "doctrine/doctrine-bundle": "2.3.0"
+        "doctrine/doctrine-bundle": "2.3.0",
+        "sylius/invoicing-plugin": "<0.16.0"
     },
     "autoload": {
         "psr-4": {