Myokit

- Added support for Sundials 4.0.0
- Made SymPy a dependency.
- Made current loggable in discrete markov simulations.
- Added `log_times` argument to analytical HH simulation.
- Improved performance of analytical HH simulation.
- Added `AbfFile.extract_channel` method that joins sweeps.
- Added `ATF` capability to datalog viewer.
- Added limited `.pro` support to `DataLogViewer`.
- Added `ProgressReporter` that cancels the operation after a time out.
- Added cut/copy/paste options to menu in IDE.
- Bugfix: `myokit.system` didn't check for SymPy version.
- Deprecated `myo` script.
- Changed myokit.VERSION to `myokit.__version__`.
- Various minor tweaks and fixes.

- Added `myokit.lib.hh` module for recognising Hodgkin-Huxley style ion current models and using them in fast analytical simulations.
- Added Rush-Larsen (RL) option to OpenCLSimulation.
- Added CUDA kernel export with RL updates.
- Added `OpenCLRLExporter` for OpenCL kernel with Rush-Larsen.
- Improved logging of intermediary variables in OpenCL simulations.
- Improved logging in `Simulation1d`.
- Fix to ABF reader for (unsupported) userlists (abf v2).
- Fixes to Sundials configuration on Windows.
- Small bugfixes, documentation updates, etc.

- Various fixes to make Myokit work with Python 2.7.6 (and later).

- Now running sundials auto-detection with every `import myokit` if not set in config file.

- Bugfix to `OpenCL.load_selection`.
- Added system info command.
- Added command option to show C Compiler support.
- Added command option to show Sundials support.
- Bugfix to `Unit.rdiv`.
- Small fixes to `lib.fit`.
- Documentation config update for `sphinx >=1.8`.
- Parsing now has full test cover.
- Removed special line feed code from parser, as in unicode they are treated as newlines (and stripped out by `splitlines()`).
- Removed obsolete `TEXT_OPS` code from parser.
- Removed redundant check from parser.
- Removed another redundant check from parser.
- Various small bugfixes and tweaks.

- Added sundials version detection on first run.
- Moved myokit config files from `~/.myokit` to `~/.config/myokit`.
- Renamed `NumpyExpressionwriter` to `NumPyExpressionWriter`.
- Fixed test issues on MacOS.