extracting format-specific statements to dedicated classes

[LightSoar]

No description provided.

[LightSoar]

One obstacle for passing the tests in Python 3 is adding .encode():

s_32 = chr(int('0', 2))**.encode()** * 32
s_8 = chr(int('0', 2))**.encode()** * 8  # zero double

The test failed for Python 3 also because in Python 3 the float representation is longer than the one saved to the txt reference files.

Here's an example from Ft-ir.spc:
f1.data_txt() looks like this:

4000.0	95.13749694824219
3998.0	95.31822204589844
3996.0	95.56214904785156
3994.0	95.8303451538086

whereas dat = fin.read() looks like this:

4000.0	95.1374969482
3998.0	95.3182220459
3996.0	95.5621490479
3994.0	95.8303451538

not sure how to proceed.

[SoloIvan]

Refactoring all project