Update version number (switch to date-based versioning)

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for amuse 13.2.1.
+# Generated by GNU Autoconf 2.69 for amuse 2021.2.0.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -637,8 +637,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='amuse'
 PACKAGE_TARNAME='amuse'
-PACKAGE_VERSION='13.2.1'
-PACKAGE_STRING='amuse 13.2.1'
+PACKAGE_VERSION='2021.2.0'
+PACKAGE_STRING='amuse 2021.2.0'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
@@ -1451,7 +1451,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures amuse 13.2.1 to adapt to many kinds of systems.
+\`configure' configures amuse 2021.2.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1512,7 +1512,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of amuse 13.2.1:";;
+     short | recursive ) echo "Configuration of amuse 2021.2.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1657,7 +1657,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-amuse configure 13.2.1
+amuse configure 2021.2.0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2257,7 +2257,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by amuse $as_me 13.2.1, which was
+It was created by amuse $as_me 2021.2.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -10774,7 +10774,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by amuse $as_me 13.2.1, which was
+This file was extended by amuse $as_me 2021.2.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -10827,7 +10827,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-amuse config.status 13.2.1
+amuse config.status 2021.2.0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 

support/version.py

@@ -1,6 +1,6 @@
-major_version = 13
+major_version = 2021
 minor_version = 2
-micro_version = 1
+micro_version = 0
 patch_version = ""
 post_version = ""
 version = "%i.%i.%i" % (major_version, minor_version, micro_version)