added NEWS

NEWS.md

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+Release 2.0-rc1-r213 (27 July 2017)
+-----------------------------------
+
+This release improves the accuracy of long-read alignment and added several
+minor features.
+
+ * Improved mapping quality estimate for short alignments containing few seed
+   hits.
+
+ * Fixed a minor bug that affects the chaining accuracy towards the ends of a
+   chain. Changed the gap cost for chaining to reduce false seeding.
+
+ * Skip potentially wrong seeding and apply dynamic programming more frequently.
+   This slightly increases run time, but greatly reduces false long gaps.
+
+ * Perform local alignment at Z-drop break point to recover potential inversion
+   alignment. Output the SA tag in the SAM format. Added scripts to evaluate
+   mapping accuracy for reads simulated with pbsim.
+
+This release completes features intended for v2.0. No major features will be
+added to the master branch before v2.0.
+
+(2.0-rc1: 27 July 2017, r213)
+
+
+
+Release r191 (19 July 2017)
+---------------------------
+
+This is the first public release of minimap2, an aligner for long reads and
+assemblies. This release has a few issues and is generally not recommended for
+production uses.
+
+(19 July 2017, r191)