include progress into readme

README.md

-# Particle-Lib: MPI-Parallelized Multi-Particle Collidion Dynamics (MPCD) made easy
+# Particle-Lib: MPI-Parallelized Multi-Particle Collision Dynamics (MPCD) made easy
 
-MPCD is a stochastic particle-based solution technique for the Navier-Sokes equations. Particle-lib provides the basic infrastructure for writing massively-parrallel simulations using MPI. Particle-lib is intended to be used as a library: particle-lib handles the memory-management and MPI communications, as well as the MPCD solver. The user has to provide the applications (and the `main.cpp` ;) as well as the physical problem).
+MPCD is a stochastic particle-based solution technique for the Navier-Stokes
+equations. Particle-lib provides the basic infrastructure for writing
+massively-parallel simulations using MPI. Particle-lib is intended to be used
+as a library: particle-lib handles the memory-management and MPI
+communications, as well as the MPCD solver. The user has to provide the
+applications (and the `main.cpp` ;) as well as the physical problem).
 
 ## Compiling
 
-This is fairly simple. Create a build directory (for example `/build/`) then run:
+This is fairly simple. Create a build directory (for example `/build/`) then
+run:
 ```console
 cd build/
 cmake ..
 make -j
 ```
 
-This will build all the test cases also (source can be found in `/test/`). See the `CMakeLists.txt` in the root directory, as well as any of the tests to see how particle-lib can be incorporated into your own project.
+This will build all the test cases also (source can be found in `/test/`). See
+the `CMakeLists.txt` in the root directory, as well as any of the tests to see
+how particle-lib can be incorporated into your own project.
 
 ### Requirements:
 
@@ -21,15 +29,26 @@ This will build all the test cases also (source can be found in `/test/`). See t
 
 ## Project Milestones
 
-This is a beta-version, it currently only has bare-bones functionality. However I am adding new features every day (about 1-2 commits per day on average). Let me know which features I should prioritize ([johannes@blaschke.science](mailto:johannes@blaschke.science)). Currently particle-lib only supports the infrastructure for the MPCD fluid particles, however new features will follow very soon. For now, have a look at the [ParticleContainer Example](/test/particle_container/interactive.cpp) to get your bearings. The current project milestones are:
-
-1. [x] Elastic memory management (`data_container.cpp`)
-2. [x] Global MPI address-space management in 2D (`mpi_comms.cpp`)
-3. [x] Universal MPI communications (`mpi_communicator.cpp')
-4. [x] MPCD fluid particle management, including MPI-communication (`particle_container.cpp`)
-5. [ ] Current WIP: Easy MPCD fluid solver
-6. [ ] IO Helpers
-7. [ ] Unit tests
-8. [ ] Embedded objects (e.g. walls, squimers)
-9. [ ] More unit tests, and comprehensive documentations
+This is a beta-version, it currently only has bare-bones functionality. However
+I am adding new features every day (about 1-2 commits per day on average). Let
+me know which features I should prioritize
+([johannes@blaschke.science](mailto:johannes@blaschke.science)). Currently
+particle-lib only supports the infrastructure for the MPCD fluid particles,
+however new features will follow very soon. For now, have a look at the
+[ParticleContainer Example](/test/particle_container/interactive.cpp) to get
+your bearings. The current project milestones are:
+
+1.  [x] Elastic memory management (`data_container.cpp`)
+2.  [x] Global MPI address-space management in 2D (`mpi_comms.cpp`)
+3.  [x] Universal MPI communications (`mpi_communicator.cpp`)
+4.  [x] MPCD fluid particle management, including MPI-communication
+        (`particle_container.cpp`)
+5.  [x] Improved MPI I/O to help with debugging (`mpi_io.cpp`,
+        `mpi_diagnostics.cpp`)
+6.  [x] More sane particle and data iterators.
+7.  [ ] Current WIP: Easy MPCD fluid solver
+8.  [ ] IO Helpers
+9.  [ ] Unit tests
+10. [ ] Embedded objects (e.g. walls, squimers)
+11. [ ] More unit tests, and comprehensive documentations