Fix memory_profiler in dev reqs and back to pickle highest protocol b…

…y default

README.md

@@ -84,18 +84,18 @@ A `WikiGraph` can be created from command line, specifying which Wikipedia dump
 
 ```bash
 spikex create-wikigraph \
- --wiki <WIKI-NAME, default: en> \
- --version <DUMP-VERSION, default: latest> \
- --output-path <YOUR-OUTPUT-PATH> \
- --dumps-path <DUMPS-BACKUP-PATH> \
+  <YOUR-OUTPUT-PATH> \
+  --wiki <WIKI-NAME, default: en> \
+  --version <DUMP-VERSION, default: latest> \
+  --dumps-path <DUMPS-BACKUP-PATH> \
 ```
 
 Then it needs to be packed and installed:
 
 ```bash
 spikex package-wikigraph \
- --input-path <WIKIGRAPH-RAW-PATH> \
- --output-path <YOUR-OUTPUT-PATH>
+  <WIKIGRAPH-RAW-PATH> \
+  <YOUR-OUTPUT-PATH>
 ```
 
 Follow the instructions at the end of the packing process and install the distribution package in your virtual environment.

requirements-dev.txt

@@ -6,7 +6,6 @@ coverage
 flake8
 invoke
 isort
-memory-profiler
 mock
 py-spy
 pytest

requirements.txt

@@ -2,6 +2,7 @@ cyac
 ftfy
 gensim
 jsonschema
+memory-profiler
 python-igraph
 regex
 smart-open

spikex/util.py

@@ -85,11 +85,11 @@ def _idx2i(_idx, start, end):
     return _idx2i(idx, 0, max_i)
 
 
-def pickle_dumps(data, protocol=4):
+def pickle_dumps(data, protocol=None):
     return srsly.pickle_dumps(data, protocol=protocol)
 
 
-def pickle_dump(data, path, protocol=4, compress=None):
+def pickle_dump(data, path, protocol=None, compress=None):
     open = gzip.open if compress else io.open
     with open(path, "wb") as fd:
         fd.write(pickle_dumps(data, protocol=protocol))