update Changelog (main 4.1 changes)

ChangeLog

@@ -1,3 +1,15 @@
+2019-xx-xx - V4.1.0
+  * Added new renders Alto, LSTMBox, WordStrBox.
+  * Added character boxes in hOCR output.
+  * Added python training scripts (experimental) as alternative shell scripts.
+  * Better support AVX / AVX2 / SSE.
+  * Disable OpenMP support by default (see e.g. #1171, #1081).
+  * Fix for bounding box problem.
+  * Implemented support for whitelist/blacklist in LSTM engine.
+  * Improved cmake configuration.
+  * Code modernization and improvements.
+  * A lot of bug fixes...
+
 2018-10-29 - V4.0.0
   * Added new neural network system based on LSTMs, with major accuracy gains.
   * Improvements to PDF rendering.
@@ -18,7 +30,7 @@
   * Enabled OpenMP support.
   * Parameter unlv_tilde_crunching change to false.
   * Miscellaneous Fixes.
-  * Detailed Changelog can be foud at https://github.com/tesseract-ocr/tesseract/wiki/4.0x-Changelog and https://github.com/tesseract-ocr/tesseract/wiki/ReleaseNotes#tesseract-release-notes-oct-29-2018---v400
+  * Detailed Changelog can be found at https://github.com/tesseract-ocr/tesseract/wiki/4.0x-Changelog and https://github.com/tesseract-ocr/tesseract/wiki/ReleaseNotes#tesseract-release-notes-oct-29-2018---v400
 
 2017-02-16 - V3.05.00
   * Made some fine tuning to the hOCR output.