update CHANGELOG for 1.20.2 and 1.20.3

CHANGELOG.txt

@@ -1,3 +1,45 @@
+2016-05-13 1.20.3:
+ * fix output of package paths (extra output was breaking tools).  Add tests.
+ * change default of no_download_source in build.py (for compatibility with conda-build-all)
+
+2016-05-13 1.20.2:
+
+Features:
+ * added --token and --user flags to pass corresponding information to anaconda upload (#921)
+ * added conda render command that outputs a fully-rendered meta.yaml to either stdout, or to file (with --file) (#908)
+ * support source checkout tools specified in meta.yaml. If source checkout fails at the rendering phase, source checkout and rendering are re-done after the build environment is created. (#843, #946)
+ * fn is now optional when a URL specifies a filename. (#942)
+ * CRAN skeleton generator now uses MSYS2 for Windows support (#942)
+ * conda build & conda render both recursively look for meta.yaml (support conda-forge feedstock submodules) (#908)
+ * Whitelist MAKEFLAGS environment variable. Setting this outside conda build should take effect in your build. Parallelize on *nix by adding -j here, instead of -j${CPU_COUNT} in your build.sh. This helps on CI's, where CPU_COUNT is not always well-behaved. (#917)
+ * Run python_d executable on windows when debug feature is active (#724)
+ * add conda build flag --keep-old-work that temporarily moves your last build, then moves it back after completion. For debugging, when more than one package is involved. (#833)
+ * Allow selectors in imported jinja templates (#739)
+
+Bug fixes:
+ * fixed several instances wherein --skip-existing did not work (#897, #945)
+ * Fully render recipe before outputting build string  * fixes empty spots where GIT_* info should have been (#923)
+ * Add MSYS2 path conversion filters to avoid issues with Win 7.1 SDK (#900)
+ * Address PyPI's change of URL format (#922,
+ * Fix invalid gcc "-m 32" flag (#916)
+ * Fix empty section (due to selectors) handling regression (#919)
+ * Fix regression in handling of VS2008 Pro (not Express + VC for Python 2.7). It is important to at least try to run vcvarsall.bat. (#913)
+ * Fix CPAN skeleton generator (handle missing sections better) (#912)
+ * Make test/requires versions match build/requires without additional pinning (#907)
+ * Remove hard-coded CYGWIN path from conda-build's custom PATH (#903)
+ * Source is downloaded before testing, fixing an issue where if build machine and some other test machine had different source, strange things happened. (#946)
+ * Fix regression with Python 3.x fixing shebangs (#892)
+ * Fix conda inspect crashes by using conda-meta info rather than filenames or dist names for package info (#947)
+
+Miscellany:
+ * restore AppVeyor testing for Windows builds (#864)
+ * Build py3.5 on Appveyor (#938)
+ * PEP8 cleanup; use flake8 rather than pyflakes (#938)
+ * limited scope of project locking to avoid lock conflicts between build and rendering (#923)
+ * set up anaconda.org build infrastructure (#924)
+ * on Windows, environment variables are written to the temporary bld.bat in the source work folder. (#933)
+
+
 2016-04-21   1.20.1:
 --------------------
   * fix source/path and GIT_* issues, #801