Add key points to six episodes

[raynamharris]

These episodes are missing key points. For some episodes, key points can be translated from the English source code.

• Breve introducción a la Programación en Python, website, source-es, source-en
• Comenzando con datos, website, source-es, source-en
• Tipos de datos y formatos, website, source-es, source-en
• Combinando DataFrames con Pandas, website, source-es, source-en
• Combinando DataFrames con Pandas, website, source-es, source-en
• Flujos de trabajo y automatización, website, source-es, source-en

Relates to #63

[map0logo]

Hi! I solved this issue. 4 days ago.

[orchid00]

added to https://datacarpentry.org/python-ecology-lesson-es/05-merging-data/index.html los otros episodios todavia no tienen "Puntos clave"

[jjhsaq]

Hola, me gustaría contribuir con la traducción, ¿como puedo ayudar?

I'd like to help with translations, how can I help?

[raynamharris]

The key points on these episode have been updated in the yaml heading of each episode, but they aren't appearing on the rendered website. Any ideas how to fix this? @fmichonneau

[vinisalazar]

Hello, this seems to be fixed; the website is rendering the key points. I'll close this issue after a few days if no one objects.

[iramosp]

Hi, following up on the previous comment, I'll close the issue since the key points are rendered.