Update version number and release notes

CHANGELOG.txt

@@ -1,3 +1,17 @@
+Build 8.0.0
+========================
+Add SpatiaLite dialect (see #56)
+Add PostGIS 3 dialect (see #132)
+Add MySQL 8 dialect (see #93)
+Remove obsolete MySQL and MsSql2008 dialects
+
+Implement missing spatial criteria: EqualsExact, IsWithinDistance, Relate (see #61)
+
+Update Microsoft.Data.SqlClient to 5.1.3 (see #133)
+Fix failing MySQL 5.7 tests (see #87)
+Move CI build from AppVeyor to GitHub Actions
+Use docker compose for local unit testing
+
 Build 7.0.0
 ========================
 Add support for Npgsql 4+ (see #130)

NHibernate.Spatial.props

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <!-- Specify version info -->
     <!-- https://andrewlock.net/version-vs-versionsuffix-vs-packageversion-what-do-they-all-mean/ -->
-    <VersionMajor Condition="'$(VersionMajor)' == ''">7</VersionMajor>
+    <VersionMajor Condition="'$(VersionMajor)' == ''">8</VersionMajor>
     <VersionMinor Condition="'$(VersionMinor)' == ''">0</VersionMinor>
     <VersionPatch Condition="'$(VersionPatch)' == ''">0</VersionPatch>
     <!-- NOTE: Set to "preXYZ" for pre-releases and leave blank for full releases -->
@@ -33,4 +33,4 @@
   <ItemGroup>
     <None Include="..\Logo\NHibernate.Spatial.png" Pack="true" PackagePath="\" />
   </ItemGroup>
-</Project>
+</Project>