Chemsolve

**New Features**: Implementation of the photoelectric effect and energy calculations through changes in energy levels, and addition of periodic trends to the Element class.

In addition:
1. Removed dependencies on the periodictable library for the Element class, now using a Periodic Table csv file. Removed the attribute gathering methods and put a direct access implementation for the class attributes.
2. Added a great number of string operations to gather indexes and determine charges.
3. Implemented them into a basic redox reaction, which at the moment can calculate the oxidization numbers of the elements in the elements and products, and create the oxidation and reduction half-reaction.

Changed to use a CSV file containing periodic table data instead of the periodictable module.

*(Once again, skipped a couple of versions which contained bugs. This time, though, they don't exist on PyPi either)*

Fixed all issues involving the Reaction.fromCombustion method.

*(v1.4.2 was adding __init__ files, skipped directly to v.1.4.3).*

Changed the "electrochemistry" directory to "solutions", patched errors within it.

**Changes**: The *fromFormula* and *fromCombustion* methods have been added to the Compound and Reaction classes, respectively, as classmethods to use instead of the *FormulaCompound* and *CombustionTrain* classes.

*Note*: Changes are currently still backwards-compatible, the FormulaCompound and CombustionTrain classes are still usable with regular features. However, in version 2.0.0, they will be removed.

In addition:
1. The addition of the molecules attribute for elements and compounds.
2. The relative methods used for CombustionTrain and FormulaCompound implemented as utilities for future use.
3. New warnings for to-be deprecated classes.

The first inclusion of electrochemistry: an implementation of a molarity-calculation method as well as a basic molality calculating method.

In addition:
1. Tweaked some of the exceptions raised in the Compound class, added more specifics.
2. Removed an extra file containing past *(and now unused)* code.