Upgrade master README & version numbers

Change-Id: I42da065c5a76183c3b09c223d331c66d197fec85

README.md

@@ -6,7 +6,7 @@ web application that allows users to record and share evidence of lifelong learn
 For more information about Mahara and ePortfolios, see the Mahara user manual's
 introduction chapter:
 
- * http://manual.mahara.org/en/18.10/intro/introduction.html#what-is-mahara
+ * http://manual.mahara.org/en/19.04/intro/introduction.html#what-is-mahara
 
 # SUPPORT
 
@@ -33,7 +33,7 @@ The following is a check list of the steps you need to take. Please refer to the
 
 # UPGRADING
 
-Mahara 18.10 supports direct upgrades from previous Mahara versions 15.04.0 and later.
+Mahara 19.04 supports direct upgrades from previous Mahara versions 15.04.0 and later.
 
 If you are upgrading from an earlier version you will need to upgrade
 in two steps:
@@ -56,7 +56,7 @@ scripts. See:
 
 # SYSTEM REQUIREMENTS
 
-Here are the system requirements needed to run Mahara 18.10.
+Here are the system requirements needed to run Mahara 19.04.
 
 ### OS
 
@@ -120,7 +120,7 @@ three most recent versions that are officially supported by Microsoft.
 You can still use Mahara on older browsers, but may not have all functionality
 available.
 
-For Mahara 18.10, the supported browser versions are:
+For Mahara 19.04, the supported browser versions are:
 // TODO: Review list of browsers closer to the release date.
  * Firefox - 56.0
  * Chrome - 61.0

htdocs/lib/version.php

@@ -16,8 +16,8 @@ $config = new stdClass();
 // See https://wiki.mahara.org/wiki/Developer_Area/Version_Numbering_Policy
 // For upgrades on stable branches, increment the version by one.  On master, use the date.
 
-$config->version = 2018091200;
-$config->series = '18.10';
-$config->release = '18.10dev';
+$config->version = 2018100100;
+$config->series = '19.04';
+$config->release = '19.04dev';
 $config->minupgradefrom = 2017031605;
 $config->minupgraderelease = '17.04.0 (release tag 17.04.0_RELEASE)';