update version

Author: waruqi

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## master (unreleased)
 
+## v2.6.6
+
 ### New features
 
 * [#2327](https://github.com/xmake-io/xmake/issues/2327): Support nvc/nvc++/nvfortran in nvidia-hpc-sdk
@@ -1264,6 +1266,8 @@
 
 ## master (开发中)
 
+## v2.6.6
+
 ### 新特性
 
 * [#2327](https://github.com/xmake-io/xmake/issues/2327): 支持 nvidia-hpc-sdk 工具链中的 nvc/nvc++/nvfortran 编译器

core/project.mak

@@ -10,7 +10,7 @@ PRO_VERSION_MAJOR 	= 2
 PRO_VERSION_MINOR 	= 6
 
 # the project alter version
-PRO_VERSION_ALTER 	= 5
+PRO_VERSION_ALTER 	= 6
 
 # the project prefix
 PRO_PREFIX 			= XM_

core/xmake.lua

@@ -2,7 +2,7 @@
 set_project("xmake")
 
 -- version
-set_version("2.6.5", {build = "%Y%m%d%H%M"})
+set_version("2.6.6", {build = "%Y%m%d%H%M"})
 
 -- set xmake min version
 set_xmakever("2.2.3")