Changelog, HACKING, configure: updates for new release version (1.5.16)

TODO: The doxygen documentation needs revisiting. Unclear whether it
will even build right now.

ChangeLog

@@ -1,5 +1,34 @@
+2018-03-09  Steve Morley <[email protected]>
+        * Release: v1.5.16
+
+        * tests: revised and expanded test suite, github repo set to use Travis
+        CI
+
+        * Lgm_QinDenton: updated defaults, changed handling of missing data
+        files
+
+        * Lgm_Ellipsoid: added shapes, intersections, etc.
+
+        * Tools: Command line utils for Magnetic Ephemeris files and Last 
+        Closed Drift Shell calculation
+
+        * ViewDriftShell: Updates to improve portability and UI
+
+        * ComputeLstar: Behavior in Shabansky orbits now set by flag in 
+        LstarInfo struct
+
+        * Lgm_CTrans: Added JPL DE421 to obtain Sun vector (now have DE, high 
+        accuracy and low accuracy)
+
+        * TS07: TS07 magnetic field model fully enabled. Requires coefficient
+        files in same location/format as IRBEMlib.
+
+        * Other: More changes since this file was last updated than can be 
+        encapsulated here. OSS release and GitHub hosting means that commit 
+        history is now publicly available.
+
 2011-07-08  Mike Henderson <[email protected]>
-    * configure.ac: added LGM_INDEX_DATA_DIR to locate where to find index data (e.g. Kp, Dst, AE). 
+        * configure.ac: added LGM_INDEX_DATA_DIR to locate where to find index data (e.g. Kp, Dst, AE). 
 
 2011-04-25  Mark Galassi  <[email protected]>
 	* configure.ac, lanlgeomag.spec.in: started maintaining a .spec.in

HACKING

@@ -4,10 +4,12 @@ Instructions for developers who use the source code repository
 GIT repository
 ==============
 
-Initial checkout:
+The source repository can be obtained (read-only) at:
 git clone https://github.com/drsteve/LANLGeoMag.git
 
+For write access, fork the repository and clone from your fork.
 Further information can be found in the github help.
+
 Then:
 
 cd LanlGeoMag
@@ -22,6 +24,8 @@ git commit
 git pull
 git push
 
+Then send a pull request with your changes.
+
 
 Prerequisites
 =============

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 
-AC_INIT([LanlGeoMag], [1.5.15], [[email protected]])
+AC_INIT([LanlGeoMag], [1.5.16], [[email protected]])
 AC_CONFIG_SRCDIR([libLanlGeoMag/quicksort.c])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])