Refactor beats_hmm module to be python only and allow transitions at beat boundaries

.travis.yml

@@ -13,9 +13,9 @@ before_install:
   - sudo apt-get install -qq ffmpeg
   # install numpy etc. via miniconda
   - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then
-        wget http://repo.continuum.io/miniconda/Miniconda-3.8.3-Linux-x86_64.sh -O miniconda.sh;
+        wget http://repo.continuum.io/miniconda/Miniconda-latest-Linux-x86_64.sh -O miniconda.sh;
     else
-        wget http://repo.continuum.io/miniconda/Miniconda3-3.8.3-Linux-x86_64.sh -O miniconda.sh;
+        wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
     fi
   - bash miniconda.sh -b -p $HOME/miniconda
   - export PATH="$HOME/miniconda/bin:$PATH"
@@ -24,7 +24,7 @@ before_install:
   - conda update -q conda
   - conda config --add channels pypi
   - conda info -a
-  - deps='pip cython numpy scipy nose pep8'
+  - deps='pip libgfortran cython numpy scipy nose pep8'
   - conda create -q -n test-environment "python=$TRAVIS_PYTHON_VERSION" $deps
   - source activate test-environment
   - pip install codecov

bin/GMMPatternTracker

@@ -44,18 +44,15 @@ def main():
     Proceedings of the 16th International Society for Music Information
     Retrieval Conference (ISMIR), 2015.
 
-    This program uses only two rhythmical patterns and allows tempo changes
-    only at bar boundaries.
-
     This program can be run in 'single' file mode to process a single audio
     file and write the detected beats to STDOUT or the given output file.
 
-    $ DownBeatTracker single INFILE [-o OUTFILE]
+    $ GMMPatternTracker single INFILE [-o OUTFILE]
 
     If multiple audio files should be processed, the program can also be run
     in 'batch' mode to save the detected beats to files with the given suffix.
 
-    $ DownBeatTracker batch [-o OUTPUT_DIR] [-s OUTPUT_SUFFIX] LIST OF FILES
+    $ GMMPatternTracker batch [-o OUTPUT_DIR] [-s OUTPUT_SUFFIX] LIST OF FILES
 
     If no output directory is given, the program writes the files with the
     detected beats to same location as the audio files.