:star2: New features:
* Add sklearn wrapper for RpModel (chinmayapancholi13, [1395](https://github.com/RaRe-Technologies/gensim/pull/1395))
* Add sklearn wrappers for LdaModel and LsiModel (chinmayapancholi13, [1398](https://github.com/RaRe-Technologies/gensim/pull/1398))
* Add sklearn wrapper for LdaSeq (chinmayapancholi13, [1405](https://github.com/RaRe-Technologies/gensim/pull/1405))
* Add keras wrapper for Word2Vec model (chinmayapancholi13, [1248](https://github.com/RaRe-Technologies/gensim/pull/1248))
* Add LdaModel.diff method (menshikh-iv, [1334](https://github.com/RaRe-Technologies/gensim/pull/1334))
* Allow use of truncated Dictionary for coherence measures. Fix 1342 (macks22, [1349](https://github.com/RaRe-Technologies/gensim/pull/1349))
:+1: Improvements:
* Fix save_as_text/load_as_text for Dictionary (vlejd, [1402](https://github.com/RaRe-Technologies/gensim/pull/1402))
* Add sampling support for corpus. Fix 308 (vlejd, [1408](https://github.com/RaRe-Technologies/gensim/pull/1408))
* Add napoleon extension to sphinx (rasto2211, [1411](https://github.com/RaRe-Technologies/gensim/pull/1411))
* Add KeyedVectors support to AnnoyIndexer (quole, [1318](https://github.com/RaRe-Technologies/gensim/pull/1318))
* Add BaseSklearnWrapper (chinmayapancholi13, [1383](https://github.com/RaRe-Technologies/gensim/pull/1383))
* Replace num_words to topn in model for unification. Fix 1198 (prakhar2b, [1200](https://github.com/RaRe-Technologies/gensim/pull/1200))
* Rename out_path to out_name & add logging for WordRank model. Fix 1310 (parulsethi, [1332](https://github.com/RaRe-Technologies/gensim/pull/1332))
* Remove multiple iterations of corpus in p_boolean_document (danielchamberlain, [1325](https://github.com/RaRe-Technologies/gensim/pull/1325))
* Fix codestyle in TfIdf (piskvorky, [1313](https://github.com/RaRe-Technologies/gensim/pull/1313))
* Fix warnings from Sphinx. Partial fix 1192 (souravsingh, [1330](https://github.com/RaRe-Technologies/gensim/pull/1330))
* Add test_env to setup.py (menshikh-iv, [1336](https://github.com/RaRe-Technologies/gensim/pull/1336))
:red_circle: Bug fixes:
* Add cleanup in annoy test (prakhar2b, [1420](https://github.com/RaRe-Technologies/gensim/pull/1420))
* Add cleanup in lda backprop test (prakhar2b, [1417](https://github.com/RaRe-Technologies/gensim/pull/1417))
* Fix out-of-vocab in FastText (jayantj, [1409](https://github.com/RaRe-Technologies/gensim/pull/1409))
* Add cleanup in WordRank test (parulsethi, [1410](https://github.com/RaRe-Technologies/gensim/pull/1410))
* Fix rest requirements in Travis. Partial fix 1393 (ibrahimsharaf, menshikh-iv, [1400](https://github.com/RaRe-Technologies/gensim/pull/1400))
* Fix morfessor exception. Partial fix 1324 (souravsingh, [1406](https://github.com/RaRe-Technologies/gensim/pull/1406))
* Fix test for FastText (prakhar2b, [1371](https://github.com/RaRe-Technologies/gensim/pull/1371))
* Fix WikiCorpus (alekol, [1333](https://github.com/RaRe-Technologies/gensim/pull/1333))
* Fix backward incompatibility for LdaModel (chinmayapancholi13, [1327](https://github.com/RaRe-Technologies/gensim/pull/1327))
* Fix support for old and new FastText model format. Fix 1301 (prakhar2b, [1319](https://github.com/RaRe-Technologies/gensim/pull/1319))
* Fix wrapper tests. Fix 1323 (shubhamjain74, [1359](https://github.com/RaRe-Technologies/gensim/pull/1359))
* Update export_phrases method. Fix 794 (toumorokoshi, [1362](https://github.com/RaRe-Technologies/gensim/pull/1362))
* Fix sklearn exception in test (souravsingh, [1350](https://github.com/RaRe-Technologies/gensim/pull/1350))
:books: Tutorial and doc improvements:
* Fix incorrect link in tutorials (aneesh-joshi, [1426](https://github.com/RaRe-Technologies/gensim/pull/1426))
* Add notebook with sklearn wrapper examples (chinmayapancholi13, [1428](https://github.com/RaRe-Technologies/gensim/pull/1428))
* Replace absolute pathes to relative in notebooks (vochicong, [1414](https://github.com/RaRe-Technologies/gensim/pull/1414))
* Fix code-style in keras notebook (chinmayapancholi13, [1394](https://github.com/RaRe-Technologies/gensim/pull/1394))
* Replace absolute pathes to relative in notebooks (vochicong, [1407](https://github.com/RaRe-Technologies/gensim/pull/1407))
* Fix typo in quickstart guide (vochicong, [1404](https://github.com/RaRe-Technologies/gensim/pull/1404))
* Update docstring for WordRank. Fix 1384 (parulsethi, [1378](https://github.com/RaRe-Technologies/gensim/pull/1378))
* Update docstring for SkLdaModel (chinmayapancholi13, [1382](https://github.com/RaRe-Technologies/gensim/pull/1382))
* Update logic for updatetype in LdaModel (chinmayapancholi13, [1389](https://github.com/RaRe-Technologies/gensim/pull/1389))
* Update docstring for Doc2Vec (jstol, [1379](https://github.com/RaRe-Technologies/gensim/pull/1379))
* Fix docstring for KL-distance (viciousstar, [1373](https://github.com/RaRe-Technologies/gensim/pull/1373))
* Update Corpora_and_Vector_Spaces tutorial (charliejharrison, [1308](https://github.com/RaRe-Technologies/gensim/pull/1308))
* Add visualization for difference between LdaModel (menshikh-iv, [1374](https://github.com/RaRe-Technologies/gensim/pull/1374))
* Fix punctuation & typo in changelog (piskvorky, menshikh-iv, [1366](https://github.com/RaRe-Technologies/gensim/pull/1366))
* Fix PEP8 & typo in several PRs (menshikh-iv, [1369](https://github.com/RaRe-Technologies/gensim/pull/1369))
* Update docstrings connected with backward compability in for LdaModel (chinmayapancholi13, [1365](https://github.com/RaRe-Technologies/gensim/pull/1365))
* Update Corpora_and_Vector_Spaces tutorial (schuyler1d, [1360](https://github.com/RaRe-Technologies/gensim/pull/1360))
* Fix typo in Doc2Vec doctsring (fujiyuu75, [1356](https://github.com/RaRe-Technologies/gensim/pull/1356))
* Update Annoy tutorial (pmbaumgartner, [1355](https://github.com/RaRe-Technologies/gensim/pull/1355))
* Update temp folder in tutorials (yl2526, [1352](https://github.com/RaRe-Technologies/gensim/pull/1352))
* Remove spaces after print in Topics_and_Transformation tutorial (gsimore, [1354](https://github.com/RaRe-Technologies/gensim/pull/1354))
* Update Dictionary docstring (oonska, [1347](https://github.com/RaRe-Technologies/gensim/pull/1347))
* Add section headings in word2vec notebook (MikeTheReader, [1348](https://github.com/RaRe-Technologies/gensim/pull/1348))
* Fix broken urls in starter tutorials (ka7eh, [1346](https://github.com/RaRe-Technologies/gensim/pull/1346))
* Update quick start notebook (yardsale8, [1345](https://github.com/RaRe-Technologies/gensim/pull/1345))
* Fix typo in quick start notebook (MikeTheReader, [1344](https://github.com/RaRe-Technologies/gensim/pull/1344))
* Fix docstring in keyedvectors (chinmayapancholi13, [1337](https://github.com/RaRe-Technologies/gensim/pull/1337))